GE Industrial Solutions NEMA 3R User Manual

GE Consumer & Industrial

Electrical Distribution

Double-Throw Safety Switch, NEMA 3R

DEH-44154 Installation Instructions
30-400 Ampere Double-Throw Safety Switch

General

To comply with the National Electrical Code and
Underwriters Laboratories, the safety switch must be
installed in accordance with the information provided
on the UL rating label on the inside of the equipment.
Follow all local electrical codes and have work
performed by a qualified electrical contractor and/or
licensed electrician only.

WARNING: Hazard of electrical shock or
burn. Turn off power before installing or
servicing this equipment.

1. Move switch handle to OFF or center position.

2. Open switch door

Unlatch Latch A, then open the door by pushing Latch
B to the right until it clears the cover. The door is
hinged on the left and opens on the right.

4. Mount switch.

Use the mounting holes as shown with fasteners of the
appropriate size for the switch being mounted.

5. Remove knockouts.

Remove the center portion of the knockout first by
striking it inward with a hammer and screwdriver.
Outer rings may then be pried up or driven in one at a
time.

3. Install hub.

Install the rainright hub, if required, as shown above.

6. Pull Line and Load wiring into the box.

7. Wire phase A, B and C of Load as shown.

Refer to rating label inside switch for load lug
tightening torque. Pull Load wires into the switch in the
direction indicated by the arrows

8. Wire phase A, B, and C of Line 1 as shown.

Refer to rating label inside switch for line lug tightening
torque. Pull Line1 wires into the switch in the direction
indicated by the arrows.

9. Wire three phases A, B, C of Line 2 as shown.

Refer to rating label inside equipment for proper
tightening torque. Wire Line 2 only in the direction
indicated by the arrow.

How to use the interlock defeat feature

WARNING: Hazard of electrical shock or

burn. The interlock defeat allows the door
interlock to be overridden and the door to
be opened when the switch handle is in the
ON position. This should only be done by
qualified electrical contractor and/or
licensed electrician.

• IN PREPARATION FOR OPENING THE ENCLOSURE
DOOR, USE APPROPRIATE NFPA 70E PERSONAL
PROTECTIVE EQUIPMENT (PPE).

• Disengage Latch A and Latch B as described in
Step 2 above.

• Insert a blade-type screwdriver of the appropriate
size into the defeat mechanism screw and rotate it
counterclockwise (see directional arrow below)
approximately 25º.

• Open the door.

10. Re-check all electrical connections.

Ensure that all electrical connections are tightened to
the proper torque before energizing the safety switch.

11. Close door.

Close the door and ensure that Latch A (see Step 2) is
engaged.

GE Consumer & Industrial
41 Woodford Avenue
Plainville, CT 06062

www.geelectrical.com

NOTE: Accessories and replacement parts are listed on the
label inside the safety switch door.

DEH-44154