BETA Protecting. Low-Voltage Fuse Systems. LV HRC fuse links. 3/36 Siemens ET B1 2008

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1 LV HRC fuse links Overview LV HRC fuses are used for installation systems in non-residential, commercial and industrial buildings as well as in switchboards of power supply companies. They therefore protect essential building parts and installations. LV HRC fuses are fuse systems designed for operation by scilled personnel. There are no constructional requirements for non-interchangeability of rated current and touch protection. The components and auxiliary equipment are designed in such a way as to ensure the safe replacement of LV HRC fuses or isolation of systems. LV HRC fuse links are available in the sizes 000, 00, 0,,,, and a. LV HRC fuse links are available in the following operational classes: gg for cable and line protection am for the short-circuit protection of switching devices in motor circuits gr or ar for the protection of power semiconductors gs: The new gs operational class combines cable and line protection with semiconductor protection. LV HRC fuse links of size 000 can also be used in LV HRC fuse bases, LV HRC fuse switch disconnectors, LV HRC fuse strips as well as in LV HRC in-line fuse switch disconnectors of size 00. The fuse links 00 A, A and A comply with the standard but do not have the VDE mark. LV HRC components I_ $ LV HRC fuse base from the SR0 busbar system % LV HRC fuse base for busbar mounting & LV HRC fuse base, P ( LV HRC fuse base, P ) LV HRC contact covers * LV HRC fuse link + LV HRC signal detectors, LV HRC partition - LV HRC protective cover with slewing equipment,. - for screw fixing on mounting plate / - for screw fixing on busbar system 0 - for claw fixing on busbar /LV HRC protective cover for with slewing equipment LV HRC slewing equipment LV HRC fuse base cover LV HRC isolating link with insulated grip lugs LV HRC isolating link with non-insulated grip lugs LV HRC fuse puller with sleeve LV HRC fuse puller / Siemens ET B 00

2 Benefits LV HRC fuse links Tripped Not tripped Tripped Not tripped LV HRC fuse links with combination alarm signal the tripping of a fuse by a clear color change from red to white. This enables fast identification and replacement of the tripped fuse links. This increases plant availability The insulated grip lugs made of metal are integrated in the top and bottom covers of the fuse link in molded plastic and provide greater safety during replacment. The mark shown below indicates that the grip lugs are insulated Technical specifications LV HRC fuse links Operational class gg In the standard series with front indicator, the front-mounted red indicator signals the tripping of a fuse. LV HRC fuse links are always equipped with silver-plated contact blades. This means that they are non-corroding and have less contact resistance. This ensures the long-term operational safety of the plant. Operational class am NA...- NA...- NA...- NA...- NA...- ND NA...-KK NA...- NA...- ND NY.. Standards IEC 0-, -; EN 0-; DIN VDE 0 Approved acc. to DIN VDE 0-; CSA. No., File No. 0 Rated voltage U n Sizes 000 and 00 V AC V DC Sizes and V AC V DC Size V AC V DC 0 -- Sizes (IEC design) V AC and a V DC Rated current I n A Rated breaking capacity ka AC ka DC Contact pins Non-corroding, silver-plated Resistance to climate C at % relative humidity Siemens ET B 00 /

3 LV HRC fuse links Selection and ordering data Insulated grip lugs Sizes Mounting width I n U n DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx mm A V AC/ VDC Unit(s) Unit(s) kg LV HRC fuse links with combination alarm, operational class gg /-- B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA /-- B NA -KK B NA 0-KK B NA B NA /-- B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA /-- B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA B NA / Siemens ET B 00

4 Size Mounting width Non-insulated grip lugs I n U n DT Order No. Price Insulated grip lugs PG DT Order No. Price LV HRC fuse links PG PU PS*/ P. unit Siemens ET B 00 Weight per P. unit approx A VAC/ VDC Unit(s) Unit(s) kg LV HRC fuse links with combination alarm, operational class gg / B NA 0 0 B NA B NA 0 0 B NA B NA 0 0 B NA B NA 0 0 B NA } NA 0 0 } NA } NA 0 0 } NA } NA 0 } NA B NA 0 B NA 0 0. } NA 0 } NA B NA 0 B NA } NA 0 0 } NA } NA 0 } NA } NA 0 } NA } NA 0 0 } NA / B NA - 0 B NA B NA 0-0 B NA } NA 0 } NA } NA 0 A NA / B NA 0 B NA B NA 0 B NA B NA 0 0 B NA B NA 0 B NA B NA 0 B NA B NA 0 B NA B NA 0 B NA B NA 0 } NA B NA 0 } NA } NA 0 } NA } NA 0 } NA } NA 0 } NA B NA 0 B NA } NA 0 } NA / B NA 0 B NA B NA 0 0 B NA B NA 0 B NA B NA 0 B NA B NA 0 0 B NA B NA 0 B NA } NA 0 } NA } NA 0 0 } NA B NA 0 B NA } NA 0 } NA B NA } NA 0 } NA B NA } NA 0 0 } NA /

5 LV HRC fuse links Size Mounting width /0 Siemens ET B 00 Non-insulated grip lugs I n U n DT Order No. Price Insulated grip lugs PG DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx A VAC/ VDC Unit(s) Unit(s) kg LV HRC fuse links with combination alarm, operational class gg 000 0/ B NA 0-0 B NA B NA 0-0 B NA B NA 0-0 B NA B NA 0-0 B NA B NA 0-0 B NA B NA 0-0 B NA B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA / B NA - 0 B NA B NA 0-0 B NA B NA - 0 B NA B NA - 0 B NA B NA 0-0 B NA / B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA B NA - 0 B NA / B NA - 0 B NA B NA 0-0 B NA B NA - 0 B NA B NA - 0 B NA B NA 0-0 B NA B NA - 0 B NA B NA - 0 B NA B NA 0-0 B NA B NA - 0 B NA

6 Sizes Mounting width Non-insulated grip lugs I n U n DT Order No. Price LV HRC fuse links PG PU PS*/ P. unit Weight per P. unit approx mm A V AC/ VDC Unit(s) Unit(s) kg LV HRC fuse links with front indicator, operational class gg /0 } NA } NA } NA } NA } NA } NA } NA 0 0. } NA 0 0. } NA 0 / } NA } NA 0 0 /0 0. } NA 0 / } NA 0 / } NA 0 0 / /-- A NY 0 0. B NY /0 B NA B NA B NA B NA B NA } NA 0 0. } NA /0 B NA B NA B NA B NA B NA B NA B NA B NA B NA A NA B NA A NA A NA A NA /0 B NA B NA B NA B NA B NA B NA } NA } NA } NA } NA } NA } NA A NA } NA Siemens ET B 00 /

7 LV HRC fuse links Sizes Mounting width Non-insulated grip lugs I n U n DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx mm A V AC/ VDC Unit(s) Unit(s) kg. 00/0 B NA B NA A NA A NA A NA A NA 0 0. } NA } NA } NA } NA A NA } NA 0 0. } NA } NA /0 B NA B NA A NA B NA } NA 0 0. A NA } NA A NA } NA } NA Can only be used for NH 0 LV HRC fuse base (IEC design). 0 00/0 B NA A NA A NA A NA 0.00 Can only be used for NH 0 LV HRC fuse base a /0 B NA B NA A NA A NA A NA 0.0 / Siemens ET B 00

8 Sizes Mounting width Non-insulated grip lugs I n U n DT Order No. Price LV HRC fuse links PG PU PS*/ P. unit Weight per P. unit approx mm A V AC/ VDC Unit(s) Unit(s) kg 000 0/0 } NA } NA } NA } NA } NA } NA } NA B NA } NA /0 B NA } NA } NA } NA } NA /0 B NA B NA B NA } NA } NA } NA } NA /0 B NA B NA B NA } NA } NA B NA } NA B NA } NA /0 B NA B NA B NA } NA B NA } NA Siemens ET B 00 /

9 LV HRC fuse links Sizes Mounting width Non-insulated grip lugs I n U n DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx mm A V AC/ VDC Unit(s) Unit(s) kg LV HRC fuse links with front indicator, operational class am /-- B ND B ND B ND B ND B ND 0 0. B ND 0 0. B ND B ND B ND B ND B ND /-- B ND B ND 0 0. B ND /-- B ND B ND B ND B ND B ND B ND B ND /-- B ND B ND B ND B ND B ND B ND A ND /-- B ND B ND B ND B ND B ND / Siemens ET B 00

10 LV HRC fuse links Dimensional drawings LV HRC fuse links, operational class gg Sizes 000 to and a t Sizes I n U n Type Dimensions t A V b h h t t I_ h h b Size (IEC design) 0 I_ V AC/0 V DC NA../ V AC/0 V DC NA V AC/0 V DC NA AC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA../ AC NA..- (KK) V AC/0 V DC NA V AC/0 V DC NA../ V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA AC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA AC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA AC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA AC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA.. 0, 0 V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA V AC/0 V DC NA.. See adjacent drawing a V AC/0 V DC NA Siemens ET B 00 /

11 LV HRC fuse links LV HRC fuse links, operational class am Size 000 to t t I_ h h b Sizes I n U n Type Dimensions A V b h h t t AC ND AC ND AC ND AC ND.. 00, 0 ND.. 0 / Siemens ET B 00

12 Overview LV HRC signal detectors are used for remote indication that the LV HRC fuse links have been tripped. different solutions are available: NX 0 signal detectors with signal detector link NX 0 signal detector top TT fuse monitors. The LV HRC signal detectors with signal detector link support monitoring of LV HRC fuse links with non-insulated grip lugs of sizes 000 to at A or more. Benefits LV HRC signal detectors reliably indicate when a fuse has tripped. Tripped fuses are quickly located. This saves time and increases plant availability. $ LV HRC fuse link % Signal detector & Microswitch ( Spring contact ) Hinged lid * Signal detector links Selection and ordering data I_ LV HRC signal detectors The signal detector link is connected in parallel to the LV HRC fuse link. In the event of a fault, the LV HRC fuse links are released simultaneously with the LV HRC fuse signaling link. A tripping pin switches a floating microswitch. The signal detector top can be used with LV HRC fuse links, sizes 000, 00, and, which are equipped with non-insulated grip lugs and have a front indicator or combination alarm. It is simply plugged into the grip lugs. If a fuse is tripped, the front indicator springs open and switches a floating microswitch. This solution should not be used for safetyrelevant plants. For this purpose, we recommend our electronic fuse monitors. $ LV HRC fuse link % Front indicator & Signal detector tops ( Rocker/lever arm ( & $ % Sizes DT Order No. Price PG PU PS*/ P. unit Siemens ET B 00 Weight per P. unit approx Unit(s) Unit(s) kg LV HRC signal detectors A NX Only for SIEMENS NA, NA and ND LV HRC fuse links with non-insulated grip lugs Rated voltage up to 0 V AC/00 V DC Contact: microswitch 0 V AC, A Connection: flat termination. mm Signal detector links Rated voltage up to 0 V AC/ 00 V DC Response value > V;. A; A NX for standard applications Response value > V; A; C NX only for meshed networks Signal detector tops 000, 00,, } NX Only for SIEMENS NA, NA and ND LV HRC fuse links with non-insulated grip lugs Rated voltage up to 0 V AC/00 V DC Contact: microswitch 0 V AC, A, CO Connection: flat termination. mm /

13 LV HRC signal detectors U e I n U c MW DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx VAC A V Unit(s) Unit(s) kg Fuse monitors For all low-voltage fuse systems. Can be used in asymmetric systems afflicted with harmonics and regenerative feedback motors. Alarm also for disconnected loads. 0 x 0... } TT For more information on fuse monitors, please refer to the chapter "Monitoring of plants and devices". Dimensional drawings LV HRC signal detectors Signal detector links Signal detector tops NX 0 NX 0, NX 0 NX 0! # I_0a I_0a 0 #! # # #! # " # Fuse monitors TT L L L 0 L L L I_ Schematics LV HRC signal detectors Signal detector top NX 0 NX 0 Fuse monitors TT N NO NC / Siemens ET B 00

14 Overview Terminals for all applications Terminals are as different as the requirements of individual systems. Flat terminals with screws are suitable for connecting busbars or cable lugs. They have a torsion-proof screw connection with shim, spring washer and nut. When tightening the nut, always ensure compliance with the specified torque due to the considerable leverage effect. The double busbar terminal differs from the flat connection in that it supports connection of two busbars, one on the top and one at the bottom of the flat connection. In the case of flat terminal with nut, connection of the nut to the terminal lug is torsion-proof. When tightening the nut, the torque must be observed because of the considerable leverage effect. The plug-in terminal is equipped for connecting two conductors. The modern box terminal ensures efficient and reliable connection to the conductors. They support connection of conductors with or without end sleeves. Up to three conductors can be clamped to the terminal strip. One conductor can be clamped to the saddle-type terminal. Siemens ET B 00 /

15 Benefits The silver-plated Lyra contact provides a large contact area for the contact pin of the LV HRC fuse link. This improves heat transmission and lowers the temperature. It also minimizes ageing of the fuse link in the maximum load range, in particular when using SITOR fuses The large contact area also facilitates replacement of LV HRC fuse links The spring washer tensioning the contact is mechanically galvanized. This will prevent hydrogen embrittlement. The contact is resistant to aging and there will be no dreaded annealing of contacts, which considerably improves operating safety. Technical specifications, LV HRC bus-mounting bases Size 000/00 0 a Standards IEC 0-, -; EN 0-; DIN VDE 0- Rated current I n A Rated voltage U n V AC 0 0 (Also suitable for 00 V SITOR fuse links) V DC 0 0 Rated breaking capacity ka AC ka DC Flat terminals Screw M M M M Nut M -- Max. tightening torque Nm Plug-in terminals Conductor cross-section mm Saddle-type terminals Conductor cross-section mm Box terminals Conductor cross-section mm Terminal strip Conductor cross-section, -wire mm Max. torque for attachment of LV HRC fuse base Nm. -- with slewing equipment with slewing equipment Size 000/00 / a Rated voltage U n V AC 0 V DC 0 Power loss W 0 Flat terminals Screw M M M M Nut M -- Max. tightening torque Nm /0 Siemens ET B 00

16 Selection and ordering data Sizes I n Version DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx A Unit(s) Unit(s) kg Made of molded plastic, for standard rail mounting or screw fixing 000/00 P With flat terminals, screw } NH 0 0 / 0. With saddle-type terminals } NH 0 0 / 0. With box terminals, up to 0 mm } NH 0 0 / 0. Made of ceramic for screw fixing P With flat terminals, screw } NH With plug-in terminals B NH With saddle-type terminals } NH With flat terminals and terminal strip B NH With flat terminals, nut B NH With flat and saddle-type terminals B NH Made of molded plastic, for standard rail mounting and screw fixing P With flat terminals } NH With plug-in terminals B NH With saddle-type terminals B NH With flat terminals and terminal strip B NH P With flat terminals A NH With plug-in terminals B NH P With flat terminals } NH With double busbar terminals B NH P With flat terminals A NH P With flat terminals } NH With double busbar terminals A NH P With flat terminals } NH With double busbar terminals A NH Siemens ET B 00 /

17 Sizes I n Version DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx A Unit(s) Unit(s) kg 0 P (IEC design) With flat terminals A NH LV HRC bus-mounting bases for busbars x mm to x mm, Busbar spacing 0 mm 000/00 P With top saddle-type terminals B NH With bottom saddle-type terminals B NH Terminal strip, top B NH /00 0 P, in tandem design outgoing feeders, top and bottom With saddle-type terminals With barriers B NH With non-interrupted barriers B NH with slewing equipment With flat terminal and additional saddle-type terminals (included) 000/00 P With screw fixing for mounting plate A NH With claw fixing for non-perforated B NH 0 0 /.000 busbar With screw fixing for perforated busbar B NH 0 0 / With screw fixing for mounting plate A NH With claw fixing for non-perforated B NH 0.00 busbar With screw fixing for perforated busbar B NH 0.00 Can also be used for fuse links of size 0 With screw fixing for mounting plate B NH With claw fixing for non-perforated B NH 0.00 busbar With screw fixing for perforated busbar, can be used as disconnector B NH 0.00 / Siemens ET B 00

18 Sizes I n Version DT Order No. Price a A 0 With screw fixing for mounting plate PG PU PS*/ P. unit Weight per P. unit approx Unit(s) Unit(s) kg A NH LV HRC contact covers for 000/00 Touch protection for contact pieces } NX 0 / B NX 0 /0 0.0 } NX 0 /0 0.0 } NX 0 / 0.0 } NX 0 / 0.0 LV HRC partitions for As intermediate phase and end barrier 000/00 Type NH 0/NH 0 } NX NH B NX NH } NX NH } NX NH } NX LV HRC protective covers IPX For 000/00 P and P B NX LV HRC covers For plugging into IPX LV HRC protective covers B NX LV HRC contact covers for LV HRC bus-mounting bases Touch protection for contact pieces Outgoing terminal } NX 0 /0 0.0 Incoming terminal B NX 0 / LV HRC partitions for NH 0 LV HRC bus-mounting bases As phase barrier C NX As end barrier C NX 0 0 / Siemens ET B 00 /

19 Sizes Version DT Order No. Price PG PU PS*/ P. unit Weight per P. unit approx Unit(s) Unit(s) kg Non-interrupted barriers For NH 0 LV HRC bus-mounting bases C NX 0 0 / Fuse pullers For LV HRC fuse links Without sleeve } NX With sleeve } NX Isolating links For and fuse switch disconnectors With insulated grip lugs 000/00 Silver-plated } NG 00 0 / C NG 0 / 0.0 } NG 0 0 / 0. } NG 0 0 / 0.0 } NG 0 0 / 0.0 With non-insulated grip lugs Tinned B NG a Nickel-plated B NG 0 0 / 0.0 Fuse-base covers For, red with yellow inscription (German) "Power supply isolating point" 000/00 C NX ,, C NX / Siemens ET B 00

20 Dimensional drawings Size 000/00 to b b h h I_ t t t ) Size LV HRC fuse links are also screwed onto the base. ) LV HRC bus-mounting bases are only connected on one side using terminals, the second connection is made through the bottom of the base. NH 0 NH 0 NH 0 Sizes I n Num- Connection Type Dimensions ber of poles Size ) A b b h h t t t LV HRC bus-mounting base ) P b b b b h h h I_ t t t t t t I_,,, I_ 0,,, 000/00 P M plug-in terminal NH Saddle-type terminal Flat terminal P M plug-in terminal NH Saddle-type terminal Flat terminal P Saddle-type terminal LV HRC bus Terminal strip mounting base ) NH P Flat terminal NH Plug terminal 0 0 P M flat terminal NH.. 0 Double busbar terminal P M flat terminal NH.. 00 P M flat terminal NH Double busbar terminal 0 P M flat terminal NH.. Double busbar terminal 0 P M flat terminal NH max. 0 ) a Can only be used in bases with slewing equipment I_,, Siemens ET B 00 I_0 /

21 LV HRC bus-mounting bases in tandem design Busbar center-to-center clearance 0 mm NH 0, NH 0 with slewing equipment Sizes 000/00 to a d c m b, 0 l e I_ I_0a a n o Sizes I n Type Dimensions A a b c d e l m n o 000/00 NH NH / 0 NH a 0 NH / Siemens ET B 00

22 LV HRC contact covers for Sizes 000/00 to, NX b e c a d Sizes Type Dimensions a b c d e 000/00 NX.. 0 NX.. NX NX... NX LV HRC protective cover, with NX LV HRC cover Size 000/00, degree of protection IPX I_ I_ LV HRC contact covers for LV HRC bus-mounting bases for -pole version and tandem design, NX, 0 LV HRC partitions Size 000/00 Sizes 0 to NX 0 NX 00, NX 0 to NX 0 Sizes Type Dimensions a b c d 0 NX NX NX NX P, NX LV HRC partitions Phase barriers End barrier For in tandem design NX 0 NX 0 NX 0 I_0a I_ I_00a,,, 0 0, 0 I_0a I_ Siemens ET B 00 /

23 Fuse puller Sizes 000 to NX 0 (without sleeve), NX 0 (with sleeve) Sleeve, I_00a,, 0 Isolating links With insulated grip lug, sizes 000/00 to NG.0 Sizes Type Dimensions a b c d e f g h g h a e d 000/00 NG NG NG 0 0 NG 0 0 NG 0 0 b I_00 f, c Isolating links with non-insulated grip lugs Size Size a NG 0 NG 0 I_0a , I_0a 0 0 / Siemens ET B 00

24 More information Space requirements when installing LV HRC fuse base, P, P LV HRC partition I_ ) Placing an additional base on the barrier and plug-on part does not increase the distance, rather the bases lie flat directly on top of one another. ) This measurement specifies the required overall mounting depth with base d and the overall mounting height h. ) If the bases are installed directly on a side wall in the distribution board, one spacer part can be broken off. This would reduce the distance measurement. I_ I_ Sizes Mounting width (mm) of Mounting height (mm) unit, P units, P Distance through spacer Base with phase barrier, without end barrier Base with phase and end barriers Base with phase barrier, without end barrier Base with phase and end barriers d h Siemens ET B 00 Partition Spacer Mounting depth (mm) NX 0.. partitions with matching bases ) h d 000/00 0 ) LV HRC bus-mounting bases see page / Installation without barriers; for mounting see page / n/a a Can only be used in bases with slewing equipment n/a /

25 D Drill hole dimensions for base plate mounting, Sizes 000/00 and 0 I_ b l h h h Sizes to! # > > D D > > Size l h h h Sizes Type Dimensions b b h h l 000/00 NH NH... NH.. 0. NH NH.. 0. NH 0 0 I_ b b b, P Size 000/00 Size I_ l h I_ h Sizes Type Dimensions b b h h l 000/00 NH NH 0 0. h l h h b b b b b b /0 Siemens ET B 00

26 Drill hole dimensions for base plate mounting, units, P Sizes 000/00 and 0 I_ b b Sizes, and b l b h h h Sizes Type Dimensions b b b h h l 000/00 NH NH... NH NH NH NH 0 0 I_ l h h h b b b b b b Size I_ a a l h h h b b b b b b b Note: These are mounted without phase barriers. A minimum clearance of a = mm is required. Siemens ET B 00 /

27 f f f Space requirements when installing LV HRC bus-mounting bases Space requirements for -piece, -pole LV HRC bus-mounting bases, staggered I_ Saddle-type terminal connection: Terminal strip: Drill hole dimensions for base plate mounting Size 000/00 Sizes and / Size a p p k I_ g k I_ g g k I_0 h h h h h h h h h Sizes I n Type Dimensions A f g h h k p 000/00 NH NH.. 0. / 0 NH a 0 NH / Siemens ET B 00

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