Circuit & Load Protection

Circuit Breakers

Circuit breakers include industrial DIN Rail circuit breakers, high density miniature circuit breakers, motor circuit protectors, residual current devices, miniature circuit breakers, and supplementary protection devices. We offer many configurations, voltage ranges, and current ranges to meet your requirements.

Miniature Circuit Breakers

Our miniature circuit breakers are IP20 finger safe and RoHS compliant. These products also meet an expanded set of standards and certifications.

Molded Case Circuit Breakers

Our Molded Case Circuit Breakers have multiple frame sizes to accommodate your required current ratings and breaking capabilities.

Motor Circuit Protectors

Our Motor Circuit Protectors provide short-circuit protection for individual motor loads and are available for a wide range of motor sizes and installation types.

Motor Protection Circuit Breakers

Our Motor Protection Circuit Breakers provide both short-circuit and overload protection for individual motor loads and are available for a wide range of motor sizes and installation types.

Disconnect Switches

Our Disconnect Switches are available in both fixed- and variable-depth styles with flange- or door-mounting styles. Our switches are NEMA, IEC, and UL rated. We offer a variety of fused and non-fused versions from 20…1250 A in both open and enclosed configurations.

Rotary Disconnect Switches

Our Rotary Disconnect Switches offer a variety of fused and non-fused versions from 20...1250 A and can be ordered with or without an enclosure. Non-fused styles permit use of your own fuse blocks. Fused switches, with integral fuse carriers, reduce panel space requirements.

Safety Disconnect Switches

Our Safety Disconnect Switches are designed for industrial and heavy commercial applications, as well as for hazardous locations. These switches offer 30 A, 60 A, 100 A and 200 A ratings.

Visible Blade Disconnect Switches

Our Visible Blade Disconnect Switches are available in both fixed- and variable-depth styles with flange- or door-mounting options. Flange-mounted disconnect switches are also available in an enclosure.

Low Voltage Motor Protectors

Low Voltage Motor Protectors includes a broad selection of overload relays, enclosed motor protectors and modular protection systems. This product offering covers bimetallic relays and solid-state overload relays, as well as motor protection circuit breakers.

Electronic Overload Relays

Our Bulletin 193/592 Electronic Overload Relays offer flexibility and convenience in modular designs. They are available for both NEMA and IEC applications. In addition, this portfolio offers a variety of options including protection and communication modules.

Bimetallic Overload Relays

Our Bimetallic Thermal Overload Relays are motor protectors for IEC applications. We designed these relays for use with our contactors and reversing contactors.

NEMA Eutectic Alloy Overload Relays

Bulletin 592 Eutectic Alloy Overload Relays are thermal type devices. When used with the proper short-circuit protection, these relays protect the motor, motor controller, and power wiring against overheating due to excessive overcurrents. The trip-free mechanism provides overload protection even when the reset button is pressed.

825-P Modular Protection System

Our Bulletin 825-P Modular Protection Systems are discontinued and no longer available for sale. Customers are encouraged to migrate to the E300 Electronic Overload Relays.

Surge Protectors & Filters

Surge Protectors and Filters meet the needs of industrial surge and filter protection requirements. Our surge protectors and filters protect motor drives, contactors, capacitor bank switching and more. They mount to a DIN rail or panel.

DIN Rail Surge Protector & Filters

Bulletin 4983-DC DIN Rail Filter and Surge Protective Device is the combination of a filter and a surge protective device. This device provides transient and noise protection in one small package.

DIN Rail Dataline Surge Protectors

Bulletin 4983-DD DIN Rail Dataline Surge Protective Devices protect industrial communication networks. These devices use a combination of 3-electrode gas discharge tubes and fast-clamping diodes.

DIN Rail Heavy Duty AC Surge Protectors

Bulletin 4983-DH Heavy-Duty AC Surge Protector combines a high-energy varistor (MOV) network with a gas discharge tube to increase performance in protection level, life duration, and suppression of leakage current. It is connected in parallel and can be located in the feeder circuit.

DIN Rail AC Surge Protectors

Bulletin 4983-DS DIN Rail AC Surge Protective Devices are connected in parallel and use an MOV to clamp high-voltage surges. These devices are primarily used in the main electrical panel for the protection of 1- and 3-phase systems.

Panel Mount Filters

Bulletin 4983-PF Panel Mount Filters provide noise protection. They monitor and clean the wave of high frequency noise disturbances that can cause premature aging.