Eaton FAZ- miniature circuit breakers are Current limiting design provides fast short-circuit interruption that reduces the let-through energy that can damage the circuit, Trip-free design. Breaker cannot be defeated by holding the handle in the ON position
Features and Benefits
Thermal-magnetic overcurrent protection Power to the circuit breakers can be fed from the line or load side Clear indication of contact position via front switch toggle Easy installation on DIN rail. Module width of only 17.5 mm (per pole) Six levels of short-circuit protection, categorized by B, C, D, K, S and Z curves Small modular width of the device and accessories saves space in the panel or equipment, which can lead to cost savings Dual rated for IEC 60947-2 standard Module widths: 1 Pole 17.5mm, 2 pole 35mm and 3 pole 52.5mm
Standards
IEC 60947-2 Relates to Low Voltage Circuit Breakers for use in industrial and similar Installations. In the UK traditionally known as moulded case circuit breakers (MCCB’s) and also air circuit breakers (ACB’s).
Q: What is the differences in the Tripping Curves B, C, D and S?
A: Curve B: Tripping: 3 to 5 times the rated current. Applications: protection of generators, persons, very long cables Curve C: Tripping: 5 to 10 times the rated current Applications: protection of circuits and general applications Curve D: Tripping: 10 to 14 times the rated current Curve S Tripping 13 to 17 times the rated current Suitable for applications where high levels of inrush current are expected. Instantaneous trip is 13–17X rating of device (In). The high magnetic trip point prevents nuisance tripping in high inductive applications such as motors, transformers and power supplies
