Intermatic K121/K122 Series Locking-Type NEMA Receptacle
Overview
The Intermatic K121 and K122 NEMA receptacles serve as the connector interface for Twist Lock photocontrols. The K121 is designed for installation directly into a light fixture, while the K122 can be attached externally using its included mounting bracket.
Features
- NEMA receptacle with 3-prong sockets.
- Compliant to ANSI C136.10 specifications.
Ratings and Construction
Construction:
- Size: 2.55" (64.7mm) Diameter, 1.52" (38.6mm) High
- Base: Phenolic
- Contacts: Brass / Phosphor Bronze
- Wire Leads: 14 AWG, 105° C, AWM3321
- Bracket (K122): Aluminum
- Back Cover (K122): Phenolic
Electrical Rating: 480V max., 15A max
Operating Temperature: -40° C to 80° C
Applicable Standards:
- UL772
- CSA C22 No M1986
- ANSI C136-10
Warranty: Limited 1-year manufacturer's warranty.
Model Information
| Model Number | Description | Wire Lead Length | Agency Listing |
|---|---|---|---|
| K121 | Locking Type NEMA Receptacle with wire leads | 9" | cURus |
| K121-30 | Locking Type NEMA Receptacle with wire leads | 30" | cURus |
| K122 | Outdoor Locking Type Receptacle with Mounting Bracket | 14" | cURus |
Specification Details
The receptacle is a NEMA style 3-pole, 3-wire, locking type that adheres to ANSI C136.10 specifications. It is constructed with a UV-stabilized phenolic base, solid phosphor bronze contacts, and 14AWG wire leads. The receptacle is agency certified and tested. It features a 480V, 15A electrical rating. The K122 model, designed for outdoor use, includes a bracket with a rain-tight back end for enhanced environmental protection.
Diagrams and Wiring
K121 Diagram
The K121 diagram illustrates the receptacle's physical dimensions (approx. 2.55" diameter, 1.52" height) and indicates connection points for electrical wiring. It shows a "NORTH" orientation marker. The receptacle is certified as "20 LISTED" (referring to CSA certification).
K122 Diagram
The K122 diagram shows the receptacle mounted with its bracket, detailing physical dimensions and indicating a "NORTH" orientation marker. It is rated for 480V max and 15A max.
Twistlock Receptacle Wiring
A wiring diagram depicts the connection of a light fixture's components. It shows a "Light" and "Ballast" connected to the receptacle. The receptacle's terminals are labeled for "Line (L1)", "Neutral or Line (L2)", and "Ground". The corresponding wire colors are Red for Line, White for Neutral, and Black for Ground.
