HFD3070 | Eaton Series C Complete Molded Case Circuit Breaker

The HFD3070 is a component of Eaton's Series C complete molded case circuit breakers. It falls under the F-frame classification within the HFD series. This circuit breaker is designed with fixed thermal and fixed magnetic trip types, ensuring reliable protection and operational efficiency in various electrical systems. 

Key specifications of the HFD3070 include its three-pole configuration, which allows it to manage three distinct electrical circuits simultaneously. The breaker is rated for a current of 70 amperes (A), making it suitable for applications requiring moderate current protection. It operates at a maximum voltage of 600 volts alternating current (Vac) and 250 volts direct current (Vdc), which accommodates a wide range of electrical environments. 

The HFD3070's trip mechanism is designed to respond to both thermal and magnetic overload conditions. The fixed thermal trip component reacts to prolonged overcurrent conditions by utilizing a bimetallic element that bends when heated. This bending motion triggers the breaker to open the circuit, thereby providing protection against sustained overcurrent. The fixed magnetic trip, on the other hand, responds to short-circuit conditions. It operates on the principle of electromagnetic induction, where a sudden surge in current generates a magnetic field that activates the trip mechanism.