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Allen Bradley 1492 Wiring System 1492-CB3H400

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1492-CB3H400

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The 1492-CB3H400 from Allen Bradley is a miniature circuit breaker designed for efficient power management in three-phase applications. Rated for 40 A current, it can handle voltages up to 480Y / 277 VAC and 65 VDC, making it suitable for various operating conditions.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1492-CB3H400

ManufacturerAllen Bradley
Product TypeMiniature Circuit Breaker
Product Line1492 Wiring System
Part Number1492-CB3H400
Number of Poles3 Poles
Phase Type3 Phase
Rated Current40 A
Rated Voltage (AC)480Y / 277 VAC
Rated Voltage (DC)65 VDC
Trip CurveH Curve
Mounting StyleDIN Rail Mount
Termination TypeScrew Terminals
Housing MaterialIndustrial-grade Thermoplastic
Protection TypeThermal-Magnetic
Reset TypeManual reset
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The Allen Bradley 1492-CB3H400 is a high-performance miniature circuit breaker explicitly designed for use in three-phase electrical systems. It is engineered to accommodate a rated current of 40 A. This circuit breaker can operate at an AC voltage of 480Y / 277 VAC and can also handle low voltage DC applications up to 65 VDC.

The unit features three poles with a trip curve classified as H curve, providing effective short-circuit protection according to the specific requirements of various industrial environments. Designed for mounting on standard DIN rails, it is easy to install and maintain within electrical panels. The termination method utilizes screw terminals, allowing for a secure and reliable connection.

Constructed from industrial-grade thermoplastic, the housing of the 1492-CB3H400 is robust and suited for rigorous conditions, ensuring long-term durability. Its thermal-magnetic protection type offers a dual mode of relay response, enabling it to respond effectively to overloads and short circuits. The manual reset function adds an additional safety layer, requiring an operator to confirm the issue before restoring power, thus preventing accidental re-energization.