Eaton / Westinghouse PB31600PR Molded Case Circuit Breaker
- 1600A
- 3 Pole
- Bolt-On
Quantity
Eaton / Westinghouse PB31600PR - 1600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built to safeguard heavy-duty commercial networks, this three-pole Tri-Pac breaker combines standard thermal-magnetic trip functions with integrated fuses. Designed specifically for legacy Westinghouse PB switchboards, it provides a seamless installation. Utilizing this exact match avoids the costly downtime and modification kits associated with upgrading to the modern RDC316T76W alternative.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | PB31600PR-R |
| Series | PB |
| Amperage | 1600A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 200kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse PB Switchboards, Motor Control Centers |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Current Limiters, Lugs Not Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Fused, Interchangeable Trip Unit |
| Special Features | Integrally Fused (Tri-Pac) |
Product FAQs
6 answersHow does the PB31600PR achieve its high interrupting capacity?
This breaker is equipped with 1600PBPR30 replaceable current limiters. These limiters allow the unit to safely interrupt up to 200kA across all standard AC voltages up to 600VAC.
What enclosures or panels accept the PB31600PR breaker?
This bolt-on insulated case breaker is designed specifically for legacy Westinghouse PB switchboards and motor control centers.
Can the trip unit on this PB frame breaker be swapped out?
Yes, this model features an interchangeable trip unit design. This allows panel builders to modify the protection characteristics without replacing the entire breaker frame.
What trip adjustments are available on this model?
The thermal magnetic trip unit provides fixed thermal protection for long-time overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
Why is this breaker listed under both Eaton and Westinghouse?
Eaton acquired the Westinghouse distribution equipment business. PB series breakers may carry Cutler-Hammer, Eaton, or legacy Westinghouse branding depending on the exact production date, but they are physically and electrically identical.
Are the current limiters built into the breaker or separate?
The 1600PBPR30 current limiters are attached to the breaker assembly but are fully replaceable if they clear a high-level fault.
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