Circuit Breaker Installation Instructions

DANGER

Hazardous Voltage. Will cause death or serious injury. Turn off and lock out power supplying the enclosure before installing.

SAFETY INSTRUCTIONS

Follow all safety instructions carefully.

Siemens and Murray Breaker Types

Plug-in Types: QP, QPH, HQP, HQPH, QT, MP-T, MP-HT, MP-MT, MH-T.

Bolt-on Types: BL, BLH, HBL.

For breaker types: BQ, BQH, HBQ, BQXD and BQLD, use only recommended mounting accessories.

Note: Installation should be performed by a qualified person, as defined by all local electrical codes and/or the National Electrical Code®.

INSTALLATION PROCEDURE

1. Turn off and lockout the power to the panelboard/load center where the device is to be installed.
2. Remove the panelboard/load center cover.
3. Move all circuit breaker toggle handles to the "OFF" position.
4. Engage the back of the device with the mounting tabs in the panelboard/load center (See Figure 1 description).
5. For plug-in devices (See Figure 1 description), push down firmly on the front of the device to engage the load center line terminal stabs.
6. For bolt-on devices, use the screws provided with the panelboard to attach the breaker line terminals to the panelboard bus (See Figure 2 description). Torque the screws per panelboard specifications.
7. Connect the circuit load wire to the circuit breaker load terminals. Torque per breaker markings.
8. Replace the panelboard/load center cover and restore panelboard power.
9. Turn the installed circuit breaker(s) “ON”.

Diagram Descriptions

Figure 1: Diagram showing a circuit breaker connecting to a panelboard bus bar. Key components labeled include: Plug-On Jaws, CTL Notch, Bus Bar, Wire Terminal, Hook Rail, Neutral Bar, and Basepan.

Figure 2: Diagram illustrating the mounting of a circuit breaker using screws. The diagram shows screws labeled 'SCREWS TORNILLOS' and the breaker's connection points.