Question 1

Where can I buy Eaton SPB breaker parts?

Accepted Answer

Voyten Electric & Electronics, Inc. is the Eaton New Surplus factory-authorized aftermarket source for Eaton/Cutler-Hammer/Westinghouse Type SPB (Systems Pow-R) breaker parts. They stock complete breakers (new and Eaton-reconditioned), rating plugs, trip units, operators, and every renewal part across all frame sizes from 800A to 5000A. All reconditioned breakers carry a 1-year warranty. Call 1-800-458-4001 or visit spbbreakers.com.

Question 2

What is an Eaton Type SPB breaker?

Accepted Answer

The Eaton Type SPB (Systems Pow-R Breaker) is a low voltage insulated case circuit breaker (ICCB) in drawout construction, manufactured since 1976. It is one of the most widely deployed ICCBs in North American industrial and utility applications. The SPB family includes the SPB-50 (50 kA), SPB-65 (65 kA), SPB-100 (100 kA), and SPB-150 (150 kA) models, plus SPBN and SPBNH non-automatic switches. Frame ratings range from 800A to 5000A. The breaker has been manufactured under the Westinghouse, Cutler-Hammer, and Eaton brand names — all the same product lineage.

Question 3

Can an SPB-100 replace an SPB-50 or SPB-65?

Accepted Answer

Yes. The SPB-50, SPB-65, and SPB-100 are electrically and mechanically identical except for their interrupting rating. The 100 kA capability is achieved through different arc chutes, moving contacts, and stationary contacts — internal modifications that have no effect on breaker dimensions. An SPB-100 slides directly into an existing SPB-50 or SPB-65 cubicle with no structural modifications, providing a clean upgrade path for facilities whose available fault current has grown past the original 50 or 65 kA rating.

Question 4

What trip units work with SPB breakers?

Accepted Answer

SPB breakers use the Pow-R Trip 7 (current production) and Digitrip RMS series trip units. The Digitrip RMS family includes the 210, 310, 510, 610, 810, and 910 models with progressively advanced protection and metering capabilities. Voyten stocks new and reconditioned trip units with rating plugs for all SPB frame sizes. Free technical documentation for all trip unit models is available at voytenmanuals.com/products/spb-breakers.

Question 5

Does Voyten offer a warranty on reconditioned SPB breakers?

Accepted Answer

Yes. All Eaton-reconditioned SPB breakers from Voyten Electric carry a 1-year warranty. Reconditioned breakers are completely disassembled, cleaned, inspected, and rebuilt to meet or exceed original manufacturer specifications, then fully tested before shipment. Voyten also stocks new SPB breakers and all renewal parts for immediate shipment.

Question 6

My SPB breaker failed — who do I call for an emergency replacement?

Accepted Answer

Call Voyten Electric at 1-800-458-4001 for 24/7 emergency support. As the Eaton New Surplus factory-authorized SPB source, Voyten identifies your breaker from its nameplate catalog number or 30-digit edge number, pulls an exact-match new or Eaton-reconditioned SPB breaker, Digitrip RMS trip unit, rating plug, or renewal part from stock, tests it, and expedites shipment to minimize downtime.

Question 7

Can I upgrade an aging SPB-50 or SPB-65 without replacing the switchgear?

Accepted Answer

Yes. The SPB-50, SPB-65, and SPB-100 share identical external dimensions, so an SPB-100 drops directly into an existing SPB-50 or SPB-65 cubicle with no structural, bus, or control-wiring changes — a clean 100 kA upgrade when the available fault current at a site has grown past the original rating. Voyten supplies the drop-in SPB-100 and all renewal parts. Call 1-800-458-4001.

Question 8

How do I identify my SPB breaker to order a replacement?

Accepted Answer

Provide the nameplate catalog number, the 30-digit edge number stamped on the breaker frame, and the trip-unit model. Voyten cross-references these to the exact replacement breaker and parts across all frames (800–5000A). Call 1-800-458-4001 or request a quote at voytenmanuals.com/contact.

Eaton Type SPB BreakersSystems Pow-R Breakers — 800A to 5000A

SPB Accessories & Renewal Parts

Complete Parts Availability

SPB-50 / SPB-65 → SPB-100 Upgrade Path

SPB Breaker Models

Interrupting & Short-Time Ratings

SPB Technical Documentation

Cutler-Hammer SPB 800A Insulated Case Circuit Breaker Manual

Digitrip Retrofit System for Westinghouse Cutler Hammer Small400 to 2000A and Large2500 to 5000A SPB Breakers

Instructions for Field Testing of Systems Pow-R Breakers

Instructions for the Systems Pow-R Breaker and Draw Out Mechanism 2508001600200025003000 AMP Frames

Master Connection Diagram for the Systems Pow-R Breaker All Frame Ratings

Master Connection Diagram for the Systems Pow-R Breaker with Digitrip RMS All Frame Ratings

Removal and Replacement of Moving and Stationary Conductors and Operating Mechanism in a Systems Pow-R Breaker

Systems Pow-R Breaker Transfer Switches

Systems Pow-R Breakers

Systems Pow-R Breakers Fixed Mounting Breakers Front and Rear Connected Page 1 SPB 50 250 800 AMP SPB 65 1200 AMP Page 2 SPB 100 250 800 1200 AMP

Instructions for Drawout Cassettes Shutters and Cable Interlocks for Through the Door Westinghouse Type SPB Systems Pow-R Breakers and Series C Types Rd and Rdc Molded Case Breakers

Westinghouse Type SPB Systems Pow-R Breaker Instruction Book (I.B. 29-801C)

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