Wiring Device-Kellems Full Product Catalog

C SECTION

TWIST-LOCK ® AND HUBBELLOCK ® DEVICES

Technical Information

50 Amp Twist-Lock® Devices

Specifications Listings Listed to UL Standard 498 (Attachment Plugs and Receptacles). Certified to CSA Standard No. 42 (General Use Receptacles, Attachment Plugs and Similar Wiring Devices).

Part

Materials

Part

Materials

Ground Contact

One piece copper/nickel

Plug (Twist-Lock)

50A

Seal Cup

Nylon

Blade Holder Power Blades

Thermoplastic polyester (black)

Cord Grip screws

302/304 Stainless steel

Brass

Seal

Neoprene

Terminal Set Screw Terminal Retainer

Stainless steel

Thermoplastic polyester

Flanged Inlet (Twist-Lock) 50A Flanged Casing

Front and Rear (housing)

Supertough nylon

Cord Clamp

Thermoplastic polyester (white)

.062" Steel, zinc plate

Seal

Neoprene

Blade Holder

Phenolic

Seal Cup

Nylon

Pressure Screws

Steel, zinc plate

Box Terminal

Copper

Blades

.100" Brass .025" Bronze

Latches

Supertough nylon

Ground Spring

Ground Contact Spring

One piece copper/nickel 302/304 Stainless steel 302/304 Stainless steel

Terminals

.050" Steel, brass finish .062" Copper, green finish

Cord Clamp Screws

Grounding Terminal Round Head Screws

Shroud

Steel, zinc plate

Receptacle (Twist-Lock) 50A Body Phenolic Face Phenolic Contact Springs

Connector (Twist-Lock)

50A

Contact Nose

Nylon (black)

Terminal Retainer Terminal Set Screw

Thermoplastic polyester (black)

.100" Brass alloy

302/304 Stainless steel

Contact Binding Plates

.100" Brass .031" Brass

Contact Spring Assembly Ring

Brass

Ground Contact

302/304 Stainless steel Supertough nylon (black) Supertough nylon (white)

Insulator

.093" Laminated phenolic .062" Steel, zinc plate

Front and Rear (housing)

Bridge (Mounting Strap)

Latches

Pressure Screws

Steel, zinc plate

Cord Clamp Box Terminal Contact Holder

Thermoplastic polyester (white)

Terminals

.050" Steel

Copper

Casing

.062" Steel, zinc plate

Thermoplastic polyester (black)

Center Pin (CS Devices)

Steel, zinc plate

Product Identification Ratings

Molded into face for all devices and stamped into stainless steel shroud on plug devices. Molded into face for plug and connector bodies and stamped into stainless steel shroud on plug devices.

Catalog Number

Performance Electrical Dielectric Voltage Max. Working Voltage Current Interrupting Temperature Rise

Withstands 2,000V minimum. 600 Volts RMS. Certified for current interrupting at full rated current. Max. 30°C temperature rise at full rated current after 50 cycles of overload at 150% rated DC current (UL 498).

Mechanical Terminal Accommodation Cord Grip Accommodation

#8 AWG min. - #4 AWG max. Solid or stranded copper wire only. Round cords types: S, SO, ST .830”-1.250” (21.08-31.75).

Environmental Flammability

UL 94 V0 for Receptacles and Inlets. HB or better for Plugs and Connectors.

Operating Temperatures Maximum continuous 75°C; minimum –40°C (w/o impact). Note: Please consult the factory for product dimensions and specifications for other products listed in this catalog.

Dimensions in Inches (mm)

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