User Guide

Wiring of Type TPS (and TPSS) Interlock Switches

Dust Covers (Available Option)

The type TPS interlock is a key actuated switch designed for back-panel mounting. The TPS has two

normally open and two normally closed contacts and the TPSS has four normally open and four normally

closed contacts. The contact blocks are clearly marked with the status of the contacts. After wiring, the

installer must test the wiring to verify that the circuitry corresponds to the key position (trapped vs. free).

Two Styles of dust covers are available to protect the lock cylinder and key against moisture, dirt, and

sleet.

The Push On dust cover slips tightly over the lock cylinder when the key is in the held position or

removed. The Push On dust cover is supplied with a chain and mounting ring, which is secured under the

interlock mounting bolt head.

The Flip Open dust cover is designed to provide protection to the lock cylinder and key regardless of the

position of the key. The Flip Open dust cover is hinged and held closed with spring tension. A single set-

screw attaches the Flip Open dust cover to the lock cylinder.

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IB/B-T/06

INTERLOCK INSTRUCTION MANUAL

N.C.

.O.

FRONT VIEW SIDE VIEW

Flip Open

Push On

2-1/8"

9/16"

1-1/2"

5/16"

1-15/32"

3/8" R

1-23/64"

Dia.

11/16"

1-1/4"

2-1/8”

Typical F Interlock