Circuit Breaker Bases & Accessories

Industrial control components including a Schneider Electric auxiliary contact block, DIN rail monitoring relay, digital protection relay, and modular control accessories used for electrical protection, monitoring, and automation systems.

Circuit breaker bases and accessories are essential components used to mount, support, and enhance circuit breakers in industrial, commercial, and utility power distribution systems. Breaker bases provide the mechanical structure and electrical interface required to securely install breakers into panels, enclosures, switchgear, and motor control assemblies. Accessories expand breaker functionality by enabling control, monitoring, protection, and remote operation features.

Breaker bases simplify installation by providing standardized or adjustable mounting points that eliminate the need for custom panel fabrication or costly equipment modifications. They help ensure proper alignment, reliable electrical connections, and safe integration into panelboards, switchgear lineups, motor control centers, and OEM-built equipment. These bases are especially valuable in applications where system reliability and serviceability are critical.

Circuit breaker accessories include auxiliary and alarm contacts, shunt trip and undervoltage release devices, motor operators, mechanical interlocks, padlocking hardware, and control interfaces. These add-on components allow breakers to provide status indication, remote tripping, fail-safe operation, and restricted access when required. Properly selected bases and accessories improve safety, support compliance with electrical codes and standards, and allow power systems to be customized for specific operational and emergency shutdown requirements.

Found 133 items
Normally In Stock
Eaton PDGXAC Auxiliary Switch
Free U.S Ground shipping
$160.07
$133.39
Normally In Stock
Eaton PDGXDC Auxiliary Switch
Free U.S Ground shipping
$204.56
$170.47
Normally In Stock
Eaton A4X6RPK Auxiliary Switch
Free U.S Ground shipping
$1284.77
$1070.64
Normally In Stock
Eaton PDGXAA Auxiliary Switch
Free U.S Ground shipping
$106.72
$88.93
Normally In Stock
Eaton PDGXDA Auxiliary Switch
Free U.S Ground shipping
$133.40
$111.17
Normally In Stock
Eaton PDGXXA Auxiliary Switch
Free U.S Ground shipping
$88.93
$74.11
Normally In Stock
Eaton 1288C74G03 Auxiliary Switch
Free U.S Ground shipping
$562.21
$468.51
Normally In Stock
Eaton AUX1A1BPK Auxiliary Switch
Free U.S Ground shipping
$274.20
$228.50
Normally In Stock
Eaton PDGXXB-BP20 Auxiliary Switch
Free U.S Ground shipping
$88.93
$74.11
Normally In Stock
Eaton PDGXUC Auxiliary Switch
Free U.S Ground shipping
$133.40
$111.17
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ABB TEDAS2AB1L - Auxiliary Switch
Free U.S Ground shipping
$279.01
$232.51
Normally In Stock
ABB TEDAS2AB1R - Auxiliary Switch
Free U.S Ground shipping
$279.01
$232.51
Normally In Stock
ABB TEDAS6AB2L - Auxiliary Switch
Free U.S Ground shipping
$676.79
$563.99
Normally In Stock
ABB TEDAS6AB2R - Auxiliary Switch
Free U.S Ground shipping
$676.79
$563.99
Normally In Stock
ABB TEDAS6AB1R - Auxiliary Switch
Free U.S Ground shipping
$336.77
$280.64
Normally In Stock
ABB TEDAS2AB2L - Auxiliary Switch
Free U.S Ground shipping
$554.74
$462.28
Normally In Stock
ABB TEDAS2AB2R - Auxiliary Switch
Free U.S Ground shipping
$554.74
$462.28
Normally In Stock
ABB SPAS600AB4DR - Auxiliary Switch
$5867.22
$4889.35
Normally In Stock
ABB SPAS240AB12R - Auxiliary Switch
$7279.90
$6066.58
Normally In Stock
ABB SPAS240AB8DR - Auxiliary Switch
$9473.42
$7894.52
Normally In Stock
ABB SPAS240AB8R - Auxiliary Switch
$6307.34
$5256.12
Normally In Stock
ABB SPAS240AB12DR - Auxiliary Switch
$9945.49
$8287.91
Normally In Stock
Eaton MA1L1RTK Auxiliary Switch
Free U.S Ground shipping
$566.48
$472.07
Normally In Stock
Eaton E2X3PK Auxiliary Switch
Free U.S Ground shipping
$1103.12
$919.27
Normally In Stock
Eaton E1X1PK Auxiliary Switch
Free U.S Ground shipping
$592.02
$493.35
Normally In Stock
Eaton E2X1LPK Auxiliary Switch
Free U.S Ground shipping
$1181.18
$984.32
Normally In Stock
Eaton E2X1RPK Auxiliary Switch
Free U.S Ground shipping
$1181.18
$984.32
Normally In Stock
Eaton 1493D37G24 Auxiliary Switch
Free U.S Ground shipping
$1272.07
$1060.06
Normally In Stock
Eaton 1493D42G24 Auxiliary Switch
Free U.S Ground shipping
$631.76
$526.47
Normally In Stock
Eaton 1493D44G23 Auxiliary Switch
Free U.S Ground shipping
$1272.07
$1060.06
Normally In Stock
Eaton 1288C74G04 Auxiliary Switch
Free U.S Ground shipping
$562.21
$468.51
Normally In Stock
Eaton 1493D37G22 Auxiliary Switch
Free U.S Ground shipping
$1272.07
$1060.06
Normally In Stock
Eaton 1372D35G03 Auxiliary Switch
Free U.S Ground shipping
$937.02
$780.85
Normally In Stock
Eaton 1493D44G24 Auxiliary Switch
Free U.S Ground shipping
$1888.21
$1573.51
Normally In Stock
Eaton 1369D79G03 Auxiliary Switch
Free U.S Ground shipping
$1150.09
$958.41
Normally In Stock
Eaton HMCP12Y8WA03 Auxiliary Switch
Free U.S Ground shipping
$29892.13
$24910.11
Normally In Stock
Eaton 655D258G06 Auxiliary Switch
Free U.S Ground shipping
$2353.55
$1961.29
Normally In Stock
Eaton 655D555G12 Auxiliary Switch
Free U.S Ground shipping
$2358.83
$1965.69
Normally In Stock
Eaton 452D379G04 Auxiliary Switch
Free U.S Ground shipping
$7892.51
$6577.09
Normally In Stock
Eaton 4986D67G14 Auxiliary Switch
Free U.S Ground shipping
$2891.21
$2409.34
Normally In Stock
Eaton 4980D16G05 Auxiliary Switch
Free U.S Ground shipping
$2891.21
$2409.34
Normally In Stock
Eaton 4980D16G06 Auxiliary Switch
Free U.S Ground shipping
$5794.60
$4828.83
Normally In Stock
Eaton 4980D16G12 Auxiliary Switch
Free U.S Ground shipping
$2891.21
$2409.34
Normally In Stock
Eaton 4980D16G13 Auxiliary Switch
Free U.S Ground shipping
$5794.60
$4828.83
Normally In Stock
Eaton 1482D28G10 Auxiliary Switch
Free U.S Ground shipping
$1103.12
$919.27
Normally In Stock
Eaton 1288C74G01 Auxiliary Switch
Free U.S Ground shipping
$562.21
$468.51
Normally In Stock
Eaton AUX1A1BPK10 Auxiliary Switch
Free U.S Ground shipping
$286.36
$238.63
Normally In Stock
Eaton AUX1EBFSEG Auxiliary Switch
Free U.S Ground shipping
$618.83
$515.69

FAQs

Q: What are circuit breaker bases used for?
Circuit breaker bases are used to securely mount and electrically connect circuit breakers within panels, switchgear, and electrical enclosures, ensuring proper alignment, support, and safe operation.

Q: What types of accessories are available for circuit breakers?
Common accessories include auxiliary and alarm contacts, shunt trip devices, undervoltage releases, motor operators, handle extensions, locking mechanisms, mechanical interlocks, and communication or monitoring modules.

Q: Why are circuit breaker accessories important?
Accessories enhance breaker functionality by enabling remote control, system monitoring, alarm indication, and added safety features. They are often required to meet code, safety, or automation requirements.

Q: How do I choose the correct breaker base or accessory?
Selection depends on the specific breaker model and frame size, voltage and current ratings, mounting configuration, and required functions such as remote tripping or status feedback. Compatibility with the breaker is critical.

Q: Are circuit breaker bases and accessories used in industrial applications?
Yes, they are widely used in industrial facilities, commercial buildings, utilities, and OEM equipment where reliable power distribution, safety compliance, and system control are essential.

Why Buy Circuit Breaker Bases & Accessories from RSP Supply

RSP Supply offers a broad selection of circuit breaker bases and accessories from trusted manufacturers, including ABB, Benshaw, Eaton, IDEC, Killark, Phoenix Contact, Schneider Electric, and Square D. Our inventory supports a wide range of breaker styles and power distribution applications, helping customers configure safe, reliable, and code-compliant electrical systems. Customers rely on RSP Supply for knowledgeable product support, dependable sourcing, and industrial-grade power distribution components.