Sentrex PA Series Installation Instructions

Wiremold Electrical Systems conform to and should be installed 

and properly grounded in compliance with requirements of the 

current National Electrical Code, Canadian Electrical Code or codes

administered by local authorities.

All electrical products may represent possible shock or fire hazard 

if improperly installed or used. Wiremold electrical products are UL 

Listed, and should be installed in conformance with current local and/or

the National Electrical Code.

PA/PB Series

HARDWIRED SURGE

PROTECTORS

I N S TA L L AT I O N   I N S T R U C T I O N S

Installation Instruction No.: BK01  –  January 2003

Wiremold’s PA and PB Series Surge Protection Devices (SPD) are designed for use at the service entrance, distribution or 

branch panel, or at sensitive equipment. Units with an “-A” suffix include remote monitoring contacts; units with a "-B" suffix

include a noise filter. Units with suffix “-AB” include both remote monitoring contacts and noise filter options. 

The following tools are required to mount and install the 

surge protector:

1. Electric Drill

2. Hole Saw (1 1/8" [29mm] typical) or other knockout 

device. (Or use pre-punched knockout on electrical panel.)

3 Wire cutter stripper for #10 AWG wire.

4. Miscellaneous hand tools. 

PREPARATION

The following materials are required to mount and install the 

surge protector:

1. Nipple (1" [25mm]) close metallic nipple for typical

installations.

2. Connecting wire: #10 AWG stranded. 

3. Fasteners appropriate for the wall type where the SPD is 

to be mounted. (Unit features built-in mounting holes,

11/64" [4.4mm] diameter.)

CAUTION 

• Installation should be performed by a qualified electrician. 

• Read all instructions prior to installing this device.

• TO AVOID FIRE, SHOCK, SERIOUS INJURY OR DEATH, TURN OFF POWER TO ELECTRICAL PANEL AND

EQUIPMENT TO BE PROTECTED PRIOR TO INSTALLATION OF THE SURGE PROTECTOR.

• PA and PB Series Surge Protection Devices are not lightning arrestors. They are not designed to 

provide protection against direct lightning strikes or against a sustained overvoltage condition. 

1. Test and check system voltage to verify proper surge protector selection. TURN OFF POWER TO ELECTRICAL PANEL.

2. Remove the cover from the electrical panel. 

3. The SPD must be connected through a dedicated circuit breaker or fused disconnect switch. The breaker (or disconnect

switch) will provide a means of removing power to the unit for maintenance. 

Use a 30 amp circuit breaker with an interrupt rating of at least 5,000A RMS, or fused disconnect switch (customer supplied). 

Use a three pole breaker for three phase systems, a two pole breaker for 120/240V systems when configuring for

240V, two phase, and a single pole breaker when configuring a 120/240V unit for 120V single phase.

NOTE: Locate the SPD as close to the breaker as possible in order to minimize the connection length between 

the panel power lines and the SPD.

4. Unscrew the four (4) nuts on the front of the unit and set them aside. Carefully remove the lid of the SPD; note that the

circuit board is attached. Place the lid with attached board in a safe location where it will not be exposed to dirt, 

dust or physical impact. 

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