M-frame Square D molded case circuit breakers are rated up to 800A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in construction, commercial buildings, oil and gas, and other industrial and commercial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Depending on your application, Square D’s “M” frame might be the right frame for you. It has an amperage rating of 300-1000 amps, which makes it the ideal choice for larger industrial loads. Depending on your needs, the “M” frame has different voltage options that range from 240 vac up to 600 vac. It also has either a 2 or 3 pole configuration. The “M” frame comes in two different designs: lug-to-lug and I-line. A traditional lug-to-lug frame has lugs on both ends while the conventional, I-line, bus-mounted frame has lugs on one end and a crown on the other, which makes installation a breeze.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

These QOB sereis miniature circuit breakers are bolted into place in NQOD and NQ panelboards or interiors, so they're more stable than plug-in or unit-mount circuit breakers. They interrupt currents when low-level faults are detected in the circuit. They have a lug orientation to allow for straight-in wiring through bus bars, which eliminates the need to pigtail wires and helps organize the load center.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

These QOU series miniature circuit breakers can be surface-, flush-, or DIN rail-mounted in panelboards and load centers to free up space wherever it's needed. They interrupt currents when overloads are detected in the circuit and can switch on both AC and DC electrical systems.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

Q-frame Square D molded case circuit breakers are rated up to 250A and 240VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in OEM commercial and industrial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

LA-, LH-, and Q4-frame Square D molded case circuit breakers are rated up to 400A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in construction, control equipment panels, mining, and other industrial and commercial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

J-frame Square D molded case circuit breakers are rated up to 250A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in construction, oil and gas, marine, and other industrial and commercial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series             

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series      

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

These Square D molded case circuit breakers plug into I-line panelboards to interrupt excessive current flows and protect devices from electrical damage. They are rated up to 125A and 347VAC/250VDC. They're used in control panels, OEM, electrical distribution equipment, and other industrial and commercial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series             

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series      

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

H-frame Square D molded case circuit breakers are rated up to 150A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in construction, oil and gas, control equipment panels, and other industrial and commercial applications. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series             

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series      

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

Square D molded case circuit breakers have current-carrying parts, mechanisms, and trip devices that are contained in a molded case. In the event of an overcurrent, they interrupt the current to prevent electrical damage in high-power applications, like industrial control panels, commercial OEM, and electrical distribution equipment.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series             

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series      

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

Circuit Breaker Wholesale is proud to offer quality new and used Eaton and Cutler-Hammer circuit breakers. With hundreds of years of cumulative experience, these manufacturers provide electrical protection solutions for nearly any type of system, including:

Residential homes
Large industrial facilities
Commercial or retail facilities
Manufacturing and transportation

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

The N-frame OPTIM Series C circuit breaker (Figure
1-1) types ND, HND, and NDC are 600 VAC maximum
rated devices with Digitrip OPTIM Models 550, 750 or
1050 trip units rated 800A or maximum continuous

current. They are for AC applications only and can
be reverse fed. They are listed in accordance with
Underwriters Laboratories, Inc. Standard UL 489 and
satisfy the requirements of International Electrotechnical
Commission Recommendations No. IEC OPTIM
750 and 1050 N-Frame circuit breakers are equipped
with zone interlocking and an auxiliary switch and alarm
switch for customer usage. Other internal accessories

are available but must be factory
installed since they are factory sealed. Model 550 is not
sealed and can accommodate field installed accessories,

 including an communications kit.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

Eaton combines several brands into one powerful central manufacturer, yielding thousands of different products to meet the needs of commercial, residential, and industrial electrical systems.  These circuit protection products include: 
BR Circuit Breakers
CH Circuit Breakers
UBI Circuit Breakers
Arc Fault Circuit Interrupters (AFCIs)
Ground Fault Circuit Interrupters (GFCIs)
Dual Function Breakers
Thermal Magnetic Breakers
Trip Flag Breakers
Low-Voltage Air Circuit Breakers
Medium-Voltage Vacuum Circuit Breakers
Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system
⑤Eaton moller Series

The J-frame Series C circuit breaker (Figure 1-1) types
JD, JDB, HJD, and JDC are 600 Vac maximum rated
devices with inter changeable thermal-magnetic trip
units rated 250A maximum continuous current. Circuit
breaker types JW, HJW, and JWC are 660 Vac maximum 

rated devices using interchangeable adjustable
thermal/adjustable magnetic or electronic trip units rated
up to 250A continuous current.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system
⑤Eaton moller Series

The F-Frame Series C circuit breakers (Fig. 1) are rated from 15A to 225A (150A for 1 pole versions) continuous current and are available as thermal-magnetic circuit breakers and molded case switches. (Molded case switches are available rated at 100A, 150A , and 225A.) Circuit breakers are listed in accordance with Underwriters Laboratories, Inc. Standard UL489, and satisfy the (P1) requirements of the International Electrotechnical Commission Recommendation No. IEC 157-1. Molded case switches are listed in accordance with UL489. For this publication, the term circuit breaker also includes molded case switches and F-Frame is used to cover all of the circuit breakers

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system
⑤Eaton moller Series

These Eaton / Cutler Hammer HFD 65kCircuit Breakers are part of the Series C, F-Frame type circuit breakers. Eaton / Cutler Hammer panelboards type PRL3 and type PRL4 as well as POW-R-LINE C switchboards use these breakers as branch devices. HFD 65k breakers are commonly available in 1P, 2P and 3P configurations.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series

HFD-frame Eaton molded case circuit breakers are rated up to 225A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're typically used with Eaton, Allen-Bradley, and Rockwell Automation motor control centers. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case.

Agency advantages supply the following brands:

①Allen-Bradley( Rockwell Automation)Series

②Square D（Schneider Electric） Series
③Eaton - Cutler Hammer (Westinghouse )Series

④SIEMENS PLC Series，Siemens CNC system

⑤Eaton moller Series