General-purpose Multi-ontact ircular Waterproof onnectors RM-W Series Plug _ straight Ø. Ø Long backshell Overview High performance waterproof circular connectors and cable assemblies used in variety of applications requiring high reliability, ease of assembly and small size. Features. Variety of types Plugs : vailable in types - straight / long back shell, straight / short back shell, right angle back shell. Straight and right angle (overmolded) cable assemblies of various lengths can be ordered. Ø. Short backshell Plug _ Right angle 0 Receptacles : Waterproof types with front, back or flange panel mounting. 0 able exit Ø ll types with,,,,,,, 0,, 0, contacts. ontacts in plating types: gold or silver.. Dust and water protection When fully mated, the connector meet requirements of IP ( hours at depth of. m) (Single-body waterproof receptacles also meet requirements of IP.). able exit in 0 directions The right-angle plugs permit exiting of the cable over a 0-degree range in any direction.. 0 able Plug _ Right angle overmolded cable assembly Ø pplications Base stations, factory automation equipment, robotic equipment, exploration and construction equipment, research instrumentation, variety of industrial and measuring instruments. ny other applications requiring high reliability waterproof circular connectors. Ø. able 00.
Product Specifications (RMWT size products) Rating Voltage rating urrent rating Operating temperature range (Note ) Storage temperature range (Note ) 00V, 0V D ( pos.) 00V, 00V D (,, pos.) 0V, 0V D ( pos.) 0V, 0V D ( pos.) (,, pos.) (,, pos.) -ç to +ç -ç to +ç haracteristic Specification onditions. ontact resistance. Insulation resistance. Withstanding voltage. Vibration. Shock. Durability (insertion/withdrawal). Temperature cycle. Humidity. Water / dust protection m ø max.(,, pos.) m ø max.(,, pos.) 00 M ø min No flashover or insulation breakdown. No electrical discontinuity for µs max. No electrical discontinuity for µs max. m ø max.(,, pos.) m ø max.(,, pos.) Insulation resistance: 0 M ø min. Insulation resistance: 0 M ø min. (Dray state) 0When mated with corresponding connector. D 00V D 0V /one minute ( pos.) 000V /one minute ( pos.) 00V /one minute (, pos.) 00V /one minute (, pos.) Frequency: to Hz, single amplitude of 0.mm,for hours in axis. cceleration of 0m/s, ms duration, sine half-wave waveform, cycles in each of the axis. 000 cycles Temperature : -ç Room temperature +ç Room temperature Time : 0 to 0 to (Minutes) cycles hours at temperature 0f 0ç and humidity 0f 0% to %. omplete dust protection. No water penetration when submerged for hours at the depth of. meter. Note : Includes temperature rise caused by the current flow. Note : The term storage refers to products stored for long period of time prior to mounting and use. Operating temperature range and humidity range Note : covers non-conducting condition of installed connectors in storage, shipment or during transportation. Materials Item Material Finish Remarks Body Insulator ontacts Gasket Zinc alloy, brass, pliable PV Diallyl phthalate, PBT Brass, phosphor bronze, or copper alloy SIR (black or red), or NBR (gray) hrome plated or nickel plated olor: Black Silver plated or gold plated olor: black or red (SIR), color: gray (NBR) ULV-0 ------------------- ------------------- Note: Do not mix different contact plating. Ordering Information RM W T P** - P (**) Series name : RM-W Number of ontacts Shell size Lock type T : Screw Lock onnector type P : Plug R : Receptacle ontact type P : Male contact S : Female contact Plating () : Silver plated () : Gold plated
g Plugs - straight, long back shell RMWTPZ-S() of mm M M0 0. Ø. Ø.. [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS RMWTPZ-P(ππ) ---ππ g RMWTPZ-P( ) -0-- g RMWTPZ-P(ππ) ---ππ g RMWTPZ-P(ππ) --0-ππ g RMWTPZ-P(ππ) RMWTPZ-P(ππ) ---ππ ---ππ g g pplicable Strain reliefs xternal cable clamp + internal, self-tightening JRW-() Part Number L No. Number of ontacts Weight RoHS RMWTPZ-S(ππ) ---ππ g RMWTPZ-S(ππ) -0--ππ g RMWTPZ-S(ππ) -0--ππ g RMWTPZ-S(ππ) ---ππ g RMWTPZ-S(ππ) --0-ππ g RMWTPZ-S(ππ) ---ππ g of mm M0 0. Ø. Drive screw() Part Number L No. Weight RoHS JRW-() -0--.g JRW-() JRW-() -0-- -0--.g.g Part Number L No. Weight RoHS JRW-() -0--.g JRW-() JRW-() --- -0--.g.g Internal, self tightening JRW-() of mm M0 0. Ø Part Number L No. Weight RoHS JRW-() JRW-() -0-- -0-- g g JRW-() -0-0- g Part Number L No. Weight RoHS JRW-() -0-- g JRW-() --- g JRW-() -00-- g Notes :. able jacket diameter:use ± 0.mm. When using the self-tightening strain relief verify the cable pull force requirements.
Plugs - Straight, short back shell RMWTPZ-S of mm M M 0. Ø. Ø.. [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS RMWTPZ-P(ππ) ---ππ g RMWTPZ-P(ππ) ---ππ g RMWTPZ-P(ππ) ---ππ g RMWTPZ-P(ππ) ---ππ g RMWTPZ-P(ππ) RMWTPZ-P(ππ) ---ππ -0--ππ g g pplicable Strain reliefs xternal cable clamp + internal, self-tightening JRW-() Part Number L No. Number of ontacts Weight RoHS RMWTPZ-S(ππ) RMWTPZ-S(ππ) RMWTPZ-S(ππ) RMWTPZ-S(ππ) RMWTPZ-S(ππ) RMWTPZ-S(ππ) ---ππ g ---ππ g ---ππ g --0-ππ g ---ππ g ---ππ g of mm M 0. Ø0 Drive screw() Part Number L No. Weight RoHS JRW-() -0-0- g JRW-() -0-- g JRW-() -0-- g Internal, self tightening Part Number L No. Weight RoHS JRW-() -0-- g JRW-() -0-- g JRW-() -00-0- g JRW-() -0-- g JRW-() of mm M 0. Ø0. Part Number L No. Weight RoHS Part Number L No. Weight RoHS JRW-() -0-- g JRW-() -0-- g JRW-() -00-- g JRW-() -0-- g JRW-() -0-0- g JRW-() -0-- g Notes :. able jacket diameter: Use ± 0.mm JRW-() -0-- g. When using the self-tightening strain relief verify the cable pull force requirements.
Plugs - right angle RMWTLP-S of. mm Set screw() M 0. Ø Ø.. M. Hexagonal hole opposite side. mm (.HX) Part Number L No. Number of ontacts Weight RoHS RMWTLP-P() -0--.g Part Number L No. Number of ontacts Weight RoHS RMWTLP-S() -0--.g Notes : Gasket material: NBR, body plating: nickel Recommended set screw tightening torque: 0. to 0. N m. HRS recommended tool: PB0/.(L 0-00-) pplicable Strain reliefs xternal cable clamp + internal, self-tightening JRW-() of mm M 0. Ø0 Drive screw() Part Number L No. Weight RoHS JRW-() -0-0- g JRW-() -0-- g JRW-() -0-- g Internal, self tightening Part Number L No. Weight RoHS JRW-() -0-- g JRW-() -0-- g JRW-() -00-0- g JRW-() -0-- g JRW-() of mm M 0. Ø0. Part Number L No. Weight RoHS JRW-() JRW-() -0-- -00-- g g JRW-() -0-0- g Part Number L No. Weight RoHS JRW-() -0-- g JRW-() -0-- g JRW-() -0-- g JRW-() -0-- g Notes : able jacket diameter: Use ± 0.mm When using the self-tightening strain relief verify the cable pull force requirements.
Overmolded able assembly - Plugs Right angle RMWTPQ-P0() M Ø. Ø.. Ø. Ø Part Number L No. Number of ontacts RoHS RMWTPQ-P0() --- 0 Part Number L No. Number of ontacts RoHS RMWTPQ-S0() --- 0 Notes :. vailable only with gold plated contacts.. ontact Hirose sales representative for dimension. Bable Specifications onstruction onductor Insulator (Lead wires) Shield Jacket Material onstruction Diameter Size Material olor Diameter Material Drain wire Material olor Diameter -onductor ombination able Red, brown Black, white, gray, blue, yellow Blue, peach, green, dark brown. mm. mm. mm ------------------- PV Black. mm -onductor ombination Shielded able Soft copper Soft copper Stranded, /0. mm dia. Stranded, /0. mm dia. Stranded, /0. mm dia. Stranded, /0. mm dia.. mm 0. mm 0. mm 0. mm WG # WG # WG #0 WG # PV PV Blue (red dots), peach (red dots), green (red dots), dark brown (red dots), blue (black dots), peach (black dots), green (black dots), dark brown (black dots) 0. mm Braiding density % ------------------- PV Black. mm BWiring Specifications ontact Number onductors Red Brown Black White Gray Blue Yellow Orange ------------------- olor onductors Blue Peach Blue (red dots) Blue (black dots) Dark brown (red dots) Dark brown (black dots) Peach (red dots) Green (red dots) Green (black dots) Peach (black dots) Green Dark brown
Receptacles Front panel mount RMWTRZ-S() Wrench opening dimension of mm Ø M [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS Part Number L No. Number of ontacts Weight RoHS RMWTRZ-P(ππ) ---ππ g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) ---ππ. g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) RMWTRZ-P(ππ) ---ππ --0-ππ 0. g g RMWTRZ-S(ππ) RMWTRZ-S(ππ) ---ππ -0--ππ.. g g RMWTRZ-P(ππ) ---ππ 0. g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) ---ππ 0. g RMWTRZ-S(ππ) ---ππ. g Notes : Recommended nut tightening torque: N m Rear panel mount RMWTRZ-S() (HX). Ø M M [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS Part Number L No. Number of ontacts Weight RoHS RMWTRZ-P(ππ) --0-ππ g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) ---ππ. g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) RMWTRZ-P(ππ) ---ππ ---ππ 0. g g RMWTRZ-S(ππ) RMWTRZ-S(ππ) ---ππ -0-0-ππ.. g g RMWTRZ-P(ππ) --0-ππ 0. g RMWTRZ-S(ππ) ---ππ. g RMWTRZ-P(ππ) ---ππ 0. g RMWTRZ-S(ππ) ---ππ. g Notes : Recommended nut tightening torque: N m
0. 0. Ø Receptacles (Square flange) Waterproof (When mated with corresponding plug) RMWTRZB-S() -Ø. Ø. M [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS Part Number L No. Number of ontacts Weight RoHS RMWTRZB-P(ππ) ---ππ g RMWTRZB-S(ππ) ---ππ. g RMWTRZB-P(ππ) --0-ππ. g RMWTRZB-S(ππ) ---ππ. g RMWTRZB-P(ππ) RMWTRZB-P(ππ) ---ππ ---ππ 0. 0g g RMWTRZB-S(ππ) RMWTRZB-S(ππ) ---ππ -0--ππ.. g g RMWTRZB-P(ππ) ---ππ 0. 0g RMWTRZB-S(ππ) --0-ππ. g RMWTRZB-P(ππ) --0-ππ 0. 0g RMWTRZB-S(ππ) ---ππ. g Notes :. Screw size: M. Recommended nut tightening torque : 0. to 0.N m Waterproof (single body) JRWTRZB-P() 0. 0. Ø Ø. -Ø. M [Specification number] (**), -** () : Silver plated contacts () : Gold plated contacts Part Number L No. Number of ontacts Weight RoHS Part Number L No. Number of ontacts Weight RoHS RMWTRZB-P(ππ) RMWTRZB-P(ππ) -- --0. 0g g RMWTRZB-P(ππ) RMWTRZB-P(ππ) -- -- 0. 0. g g Notes :. Screw size: M. Recommended nut tightening torque : 0. to 0.N m
BPlug -- Disassembly / ssembly lamp Bushing Insulator body (P) ontacts min Tightening collar Washer Screw onductors Wires able jacket B able able oupling Back shell Back shell Strain relief clamp Part Name Table Number of ontacts B Set screw() Tightening ring RMWTPZ-ππ RMWTPZ-ππ RMWTLP-ππ,,,,,,,,, mm mm mm mm mm mm mm mm mm mm..... Disassembly Fix the plug in the assembly fixture (RMTP-T0 (L0-00-0)), then remove the insulator body (P) and the back shell. Right-angle plugs have set screws in the tightening ring at locations. Loosen the set screws before removing the back shell. Remove the screws of the strain relief clamp, and then remove the clamp from the tightening collar. Wiring ssure that the cable outer diameter will fit the strain relief clamp, and is prepared as recommended in Table. It is recommended that the exposed conductors be pre-soldered, to assure easier insertion in the soldering cup. Pass the parts over the cable in the order of: tightening collar, washer, bushing, back shell, and coupling. Refer to the drawings (above) for assembly orientation of all components. Solder the wires to the contacts of the insulator body (P). Use of heat-shrink tubing or another insulating media between the soldered contacts is suggested. onnector ssembly Straight Plugs Place the completely wired insulator body (P) in the assembly fixture secured in a vise. Insert in the coupling, then back shell. The back shell should be tightened to a torque of N m. Right-angle Plugs Place the completely wired insulator body (P) in an assembly fixture secured by a vise. Insert in the coupling, then back shell (with tightening ring). When attaching the back shell, orient the cable in the desired direction and fasten the tightening ring to the insulator body (P) with a torque of N m. fter this, tighten and fix the sets crews with a torque of 0. to 0. N m. dditional assembly recommendations: In applications where continuous extremely high vibrations may be encountered it is recommended that a thread locking compound be applied to male threads prior to assembly (Loctite manufactured by Henkel Japan K.K. or equivalent) Waterproof verification - plug assembly pply air pressure of. kpa for 0 seconds from the mating side of the plug assembly. There shall not be any air leakage from inside the connector when submerged in the water tank. Precautions Follow the correct assembly sequence, cable preparation and tightening torques. ssure that the applicable cable outer surfaces are free of scratches, oil, grease or any other contamination. Do not use excessive forces or improper tools when assembling or mounting the connectors.
BReceptacle - recommended panel cut-outs Front mounting, rear nut Rear mounting, front nut Square flange, screw mounting 0.±0.0 -M 0. Ø. +0. 0 Ø +0. 0 +0.00 Ø. 0 Ø +0. 0.±0.0 Ø +0. 0 Ø. +0. 0.±0.0 Panel thickness: 0. to mm For RMWTRZ receptacles Panel thickness: 0. to. mm For RMWTRZ receptacles Panel thickness:. to mm For RMWTRZB receptacles Notes :. When attaching the receptacle to the panel, be certain to check that the gasket is in place in the groove. Do not pinch the gasket. Notes :. The view of the above diagrams is from the receptacle mating side. Notes :. The symbol in the above diagrams indicates the coupling guide position of the receptacles. Bontact Position rrangement and Specifications Shell size : ontact configuration Number of contacts Withstanding voltage urrent rating Insulation resistance ontact resistance Solder pot inner diameter 0V / minute 00Mø min. mø max..mm 000V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm Notes :. The contact configuration as viewed from the wiring side. Notes :. The symbol in the above diagrams indicates the coupling guide position of the receptacles. Notes :. Withstanding voltages indicate test voltage values. BPrecautions. Switch off the power of the circuit before disconnecting or plugging- in the connectors.. Use a connectors with socket contacts at the power side of the circuit.. Make sure that the coupling is in completely cocked position.. Use correct plug / receptacle to assure dust and water protection.
Product Specifications (RMWT to RMWT size products) Rating Voltage rating urrent rating 00V, 0V D (0 pos.) 00V, 00V D (,, pos.) 0V, 0V D (0 pos.) Operating temperature range (Note ) Storage temperature range (Note ) -ç to +ç -ç to +ç haracteristic Specification onditions. ontact resistance. Insulation resistance. Withstanding voltage. Vibration. Shock m ø max. 00 M ø min No flashover or insulation breakdown. No electrical discontinuity for µs max. No electrical discontinuity for µs max. D 00V D 0V /one minute ( pos.) 00V /one minute (,, pos.) 00V /one minute (0 pos.) Frequency: to Hz, single amplitude of 0.mm,for hours in axis. cceleration of 0m/s, ms duration, sine half-wave waveform, cycles in each of the axis.. Durability (insertion/withdrawal) m ø max. 000 cycles Temperature : -ç Room temperature +ç Room temperature. Temperature cycle Insulation resistance: 0 M ø min. Time : 0 to 0 to (Minutes) cycles. Humidity. Water / dust protection Insulation resistance: 0 M ø min. (Dray state) 0When mated with corresponding connector. hours at temperature 0f 0ç and humidity 0f 0% to %. omplete dust protection. No water penetration when submerged for hours at the depth of. meter. Note : Includes temperature rise caused by the current flow. Note : The term storage refers to products stored for long period of time prior to mounting and use. Operating temperature range and humidity range Note : covers non-conducting condition of installed connectors in storage, shipment or during transportation. Materials Item Material Finish Remarks Body Brass hrome plated or nickel plated Insulator Diallyl phthalate olor: Black ULV-0 ontacts Brass, copper alloy Silver plated or gold plated ------------------- Gasket hloroprene rubber or SIR olor: black ------------------- Note: Do not mix different contact plating. Ordering Information RM W T P** - P (**) Series name : RM-W Number of ontacts Shell size Lock type T : Screw Lock onnector type P : Plug R : Receptacle ontact type P : Male contact S : Female contact Plating () : Silver plated () : Gold plated RM W T P - P () (**) P: Strain relief () with : xternal cable clamp () without : Internal cable clamp ~ : able size
Y Z Plugs - straight, long back shell RMWTPS-S() D F Ø Part Number L No. Number of ontacts Ø RMWTPS-S() RMWTPB-S() RMWTPB-P() -0-0- --- --0-.. D TM TM TM F M0 0. M 0. M 0. Weight Remarks RoHS. Silver plated. only 0.0 pplicable Strain reliefs xternal cable clamp + internal, self-tightening RMWTP-P() Ø D Part Number L No. Ø JRW-() JRW-() JRW-() JRW-() JRW-() JRW-() RMWTP-P() ---. M 0..g Notes :. able jacket diameter:use ± 0.mm. Notes :. Recommended set screw tightening torque : 0. to 0. N m. HRS recommended tool : PB0/.(L 0-00-) Internal, self tightening RMWTP-P()() -0-- -0-- -0-- -0-- --- -0-- 0 0 0...... D M0 0. M0 0. M0 0. M0 0. M0 0. M0 0. Weight.g.g.g.g.g.g Set screw Remarks For RMWT For RMWT RoHS Ø D Part Number L No. Ø RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() -0-- -0-- -0-- --0- --- --- 0 RMWTP-P()() ---. M 0.. Notes :. able jacket diameter:use ± 0.mm. Notes :. Recommended set screw tightening torque : 0. to 0. N m. Notes :. When using the self-tightening strain relief verify the cable pull force requirements.... D... M0 0. M0 0. M0 0. M 0. M 0. M 0. Weight Remarks RoHS..0....0 For RMWT For RMWT
Y Z Plugs - Straight, short back shell RMWTP-S() D Set screw Ø Part Number L No. Number of ontacts Ø RMWTP-S() RMWTP-0S() RMWTP-P() RMWTP-0P() RMWTP-S() RMWTP-P() RMWTP-0S() RMWTP-S() RMWTP-0P() RMWTP-P() -0-- -0-- -0-- -0-0- --- --- --- --- --- --0-0 0 0 0.. 0. 0. 0. 0. Notes : Recommended set screw tightening torque : 0. to 0. N m. pplicable Strain reliefs xternal cable clamp + internal, self-tightening RMWTP-P().... TM TM TM TM TM TM TM TM TM TM F M0 0. M0 0. M0 0. M0 0. M 0. M 0. M 0. M 0. M 0. M 0. Weight Remarks RoHS.. Silver plated only 0 Ø D Internal, self tightening RMWTP-P()() Part Number L No. Ø D RoHS RMWTP-P() RMWTP-P() RMWTP-P() --- --- ---. M0 0. M0 0. M 0. Notes :. able jacket diameter:use ± 0.mm. Notes :. Recommended set screw tightening torque : 0. to 0. N m. HRS recommended tool : PB0/.(L 0-00-) Set screw Ø D Part Number L No. Ø D Weight RoHS RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() -0-- -0-- -0-- --0- --- 0..... M0 0. M0 0. M0 0. M 0. M 0..... RMWTP-P()() RMWTP-P()() --- ---.. M 0. M 0... RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() RMWTP-P()() --- --- --- --- --- M 0. M 0. M 0. M 0. M 0.. Notes :. able jacket diameter:use ± 0.mm. Notes :. Recommended set screw tightening torque : 0. to 0. N m. Notes :. When using the self-tightening strain relief verify the cable pull force requirements.
Z Y Receptacles Ø Y Z F D B -Ø. 0.± TM 0 Ø. 0 Front panel mount RMWTR-P() Part Number L No. Number of ontacts Ø B D RMWTR-P() ---.. RMWTR-S() ---.. RMWTR-0P() --0-0.. RMWTR-0S() --- 0.. RMWTR-P() ---... RMWTR-S() --0-... RMWTR-0P() --- 0... RMWTR-0S() --0-0 0.... RMWTR-P() --- 0.... RMWTR-S() --- 0.... Notes : Recommended nut tightening torque : N m TM TM TM TM TM TM TM TM TM TM Weight Remarks RoHS.... Silver plated only 0. Waterproof (single body) RMWTRK-0P() TM Part Number L No. Number of ontacts Remarks RoHS RMWTRK-0P() --- 0 Gold plated only Notes :. Screw size : M. Recommended nut tightening torque : 0. to 0. N m. Use a. to.0 mm dia.thick O-ring for the waterproof gasket that is used in the connector mounting portion.
BReceptacle - recommended panel cut-out Front mounting, rear nut Square flange, screw mounting ±0.0 M 0..±0.0 R Ø ±0.0 ر0. Ø +0. 0 B Panel thickness: 0. to mm For RM**WTR receptacles Panel thickness:. to mm For RMWTRK receptacles Part Number Ø B R For RMWTR.. 0. For RMWTR.. 0. For RMWTR.. 0. Notes : Tolelance is +0./0. Notes :. When attaching the receptacle to the panel, be certain to check that the gasket is in place in the groove. Do not pinch the gasket. Notes :. The view of the above diagrams is from the receptacle mating side. Notes :. The symbol in the above diagrams indicates the coupling guide position of the receptacles. Bontact Position rrangement and Specifications Shell size : Shell size : Shell size : ontact configuration 0 0 0 0 0 0 0 0 0 0 Number of contacts Withstanding voltage urrent rating Insulation resistance ontact resistance Solder pot inner diameter 00V / minute 00Mø min. mø max..mm 0 00V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm 0 0V / minute 00Mø min. mø max..mm 00V / minute 00Mø min. mø max..mm Notes :. The contact configuration as viewed from the wiring side. Notes :. The symbol in the above diagrams indicates the coupling guide position of the receptacles. Notes :. Withstanding voltages indicate test voltage values. BPrecautions. Switch off the power of the circuit before disconnecting or plugging- in the connectors.. Use a connectors with socket contacts at the power side of the circuit.. Make sure that the coupling is in completely cocked position.. Use correct plug / receptacle to assure dust and water protection.