Circuit & Load Protection

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 have multiple frame sizes to accommodate your required current ratings and breaking capabilities. These breakers provide protection of circuits against overload, short circuit, and ground fault. They can be combined with our NEMA and IEC motor starters, overload relays, and contactors.

Motor Circuit Protectors provide short-circuit protection for individual motor loads and are available for a wide range of motor sizes and installation types. They can be combined with our NEMA and IEC motor starters, overload relays, and contactors.

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. They can be combined with our NEMA and IEC contactors or solid-state motor controllers.

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.

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.

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.

Our Bulletin 1692 Electronic Circuit Protection Modules protect the secondary circuits of 24V DC switched mode power supplies. These modules monitor both supply voltage and load currents, and you can monitor and control the modules both locally and remotely.

Our modular Bulletin 1694 Electronic Circuit Protectors protect the secondary circuits of 24V DC switch mode power supply against short circuit or overload. The only 12.5mm wide modules can be mounted side by side no further accessories required. They come with time-saving push-in terminals. The protection modules are available in single or double channel in the same compact housing. The range comprise fixed current ratings from 1A..10A and an adjustable current version.

Bulletin 140F Fuse Holders are available for UL Class CC or Midget Fuses and IEC 10 x 38 mm fuses, with or without blown fuse indication. They are lockable in the open position and compatible with Bulletin 140M accessories.

Bulletin 1492-FB Fuse Holders are ideal for many OEM applications. Our fuse holders give you a safe and convenient means for installation of class CC, J, and midget fuses. Use our class CC and J holders for branch circuit protection. They are excellent for wire protection, small motor loads, and group protection of small motor loads.

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.

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

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.

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.

Bulletin 857 Motor-Feeder Protection, Medium Voltage offers solutions for today’s motor and feeder protection requirements in one package. Our protection relay gives you flexible control to maximize your motor’s output capabilities, and provides current, voltage and motor protection functions. The protection relay can be integrated into a low voltage or medium voltage Motor Control Center, or can be purchased as an OEM component. Configure these relays using our bundled SetPointPS software.

Bulletins 865 and 857 Motor and Feeder Protection protects devices in the distribution networks of utilities, industry, power plants and offshore application. Configure these relays using our bundled SetPointPS software.

The MachineAlert™ family of dedicated function motor protection relays offers supplementary protective functions that are easily added to your motor control circuits. These relays meet application requirements for supplemental voltage-, current-, thermistor-, power-, and power factor based protection. MachineAlert relays are an economical choice for protecting equipment investments and minimizing production downtime.

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.

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.

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.

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.

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.