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 73 items
Normally In Stock
Eaton FCWTK225 Motor Operator
Free U.S Ground shipping
$3.47
$2.89
Normally In Stock
Eaton EOP1P07 Motor Operator
Free U.S Ground shipping
$2431.43
$2026.19
Normally In Stock
Eaton MOPJG120C Motor Operator
Free U.S Ground shipping
$2748.50
$2290.42
Normally In Stock
Eaton MOPJG24D Motor Operator
Free U.S Ground shipping
$2748.50
$2290.42
Normally In Stock
Eaton MOPJG240C Motor Operator
Free U.S Ground shipping
$2737.51
$2281.26
Normally In Stock
Eaton MOPLG120C Motor Operator
Free U.S Ground shipping
$3969.40
$3307.83
Normally In Stock
Eaton MOP1P05DC Motor Operator
Free U.S Ground shipping
$2196.42
$1830.35
Normally In Stock
Eaton FJ3RTWK Motor Operator
Free U.S Ground shipping
$19.01
$15.84
Normally In Stock
Eaton FJ4RTWK Motor Operator
Free U.S Ground shipping
$26.77
$22.31
Normally In Stock
Eaton EOP5T21 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Schneider Electric S29433 H-FRAME 120VAC MOULDED CASE CIRCUIT BREAKER MOTOR OPERATOR
Free U.S Ground shipping
$1118.28
$931.90
Normally In Stock
Schneider Electric S29434 H-FRAME 277VAC MOULDED CASE CIRCUIT BREAKER MOTOR OPERATOR
Free U.S Ground shipping
$2184.01
$1820.01
Normally In Stock
Schneider Electric S31540 J-FRAME 120VAC MOULDED CASE CIRCUIT BREAKER MOTOR OPERATOR
Free U.S Ground shipping
$3008.08
$2506.73
Normally In Stock
Eaton EOP1P11 Motor Operator
Free U.S Ground shipping
$2431.43
$2026.19
Normally In Stock
Eaton EOP2T07 Motor Operator
Free U.S Ground shipping
$6529.25
$5441.04
Normally In Stock
Eaton EOP2T11 Motor Operator
Free U.S Ground shipping
$6529.25
$5441.04
Normally In Stock
Eaton EOP3MT11 Motor Operator
Free U.S Ground shipping
$7592.45
$6327.04
Normally In Stock
Eaton EOP1T07 Motor Operator
Free U.S Ground shipping
$2444.03
$2036.69
Normally In Stock
Eaton EOP1T11 Motor Operator
Free U.S Ground shipping
$2444.03
$2036.69
Normally In Stock
Eaton EOP3MT07 Motor Operator
Free U.S Ground shipping
$7592.45
$6327.04
Normally In Stock
Schneider Electric S434507 - Motor Operator
Free U.S Ground shipping
$513.62
$428.02
Normally In Stock
Eaton 2A11794G24 - Motor Operator
Free U.S Ground shipping
$7465.97
$6221.64
Normally In Stock
Eaton 2A11794G25 - Motor Operator
Free U.S Ground shipping
$7262.39
$6051.99
Normally In Stock
Eaton 2A11794G34 - Motor Operator
Free U.S Ground shipping
$7465.97
$6221.64
Normally In Stock
Eaton 2A11794G35 - Motor Operator
Free U.S Ground shipping
$7465.97
$6221.64
Normally In Stock
Eaton IZMX-M40-110AD-1 - Motor Operator
Free U.S Ground shipping
$7756.50
$6463.75
Normally In Stock
Eaton IZMX-M40-230AD-1 - Motor Operator
Free U.S Ground shipping
$7756.50
$6463.75
Normally In Stock
Eaton IZMX-M40-24DC-1 - Motor Operator
Free U.S Ground shipping
$7756.50
$6463.75
Normally In Stock
Eaton IZMX-M40-48DC-1 - Motor Operator
Free U.S Ground shipping
$7756.50
$6463.75
Normally In Stock
Eaton IZMX-M40-60DC-1 - Motor Operator
Free U.S Ground shipping
$7756.50
$6463.75
Normally In Stock
Eaton WBL5 - Motor Operator
Free U.S Ground shipping
$1141.28
$951.07
Normally In Stock
Eaton FJCWTK Motor Operator
Free U.S Ground shipping
$4.01
$3.34
Normally In Stock
Eaton EOP2T07DC Motor Operator
Free U.S Ground shipping
$5963.90
$4969.92
Normally In Stock
Eaton EOP3MT11DC Motor Operator
Free U.S Ground shipping
$7592.45
$6327.04
Normally In Stock
Eaton FCWTK Motor Operator
Free U.S Ground shipping
$3.49
$2.91
Normally In Stock
Eaton EOP5T09 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Eaton EOP5T11 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Eaton EOP5T15 Motor Operator
Free U.S Ground shipping
$5266.63
$4388.86
Normally In Stock
Eaton EOP5T07 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Eaton EOP5T26 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Eaton EOP5T22 Motor Operator
Free U.S Ground shipping
$5533.50
$4611.25
Normally In Stock
Eaton EOP1P07DC Motor Operator
Free U.S Ground shipping
$2431.43
$2026.19
Normally In Stock
Eaton EOP1P11DC Motor Operator
Free U.S Ground shipping
$2431.43
$2026.19
Normally In Stock
Eaton EOP1T07DC Motor Operator
Free U.S Ground shipping
$2444.03
$2036.69
Normally In Stock
Eaton EOP3MT07DC Motor Operator
Free U.S Ground shipping
$7592.45
$6327.04

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.