Four-pole low voltage circuit breaker

Details Four-pole low voltage circuit breaker Four-pole low voltage circuit breaker

1981-03-03

1983-05-10

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

200 50C, 200153G, 335 8, 361115, H01H 300, H01H 920, H01H 7300

Patent

active

043831460

ABSTRACT:
A four-pole circuit breaker has an operating mechanism associated with one of the intermediate main poles, so as to take up an asymmetrical position with respect to the layout of the four poles. The mechanism has springs similar to those of a three-pole breaker. The transverse tie bar is common to the three main poles and is mechanically coupled to a kinetic linkage controlling the fourth pole, so as to bring about the closure of the contacts of the fourth pole before the closure of the contacts of the main poles upon closing of the breaker, in order to match the four-pole load torque to the three-pole motor torque of the mechanism.

REFERENCES:
patent: 3840833 (1974-10-01), Muenna et al.
patent: 3908104 (1975-09-01), Michetti
patent: 4242577 (1980-12-01), Maier et al.

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