- Emax air circuit breaker: • PR331, PR332, PR333 LSIG electronic releases for the circuit breaker Emax X1 with rated uninterrupted currents from 630A to 1600A; • Air circuit breaker equipped with electronic releases type PR121, PR122, PR123 LSIG for the circuit breaker Emax E1 to E6 with rated uninterrupted currents from 400A to 6300A. • PR332, PR333 electronic releases with residual current integrated protection for circuit-breaker Emax X1 with rated uninterrupted currents from 630A to 1600A; • PR122 and PR123 electronic releases with residual current integrated protection for circuit-breakers Emax E1 to E6 with rated uninterrupted currents from 400A to 6300A PR332 PR333 LIRc PR122 LIRc PR331 PR332 PR333 LSIG PR121 PR122 PR123 LSIG A-AC A-AC - - X1 400÷1600 n - n - E1 400÷1600 - n - n E2 400÷2000 - n - n E3 400÷3200 - n - n E4 1250÷4000 - - - n E6 3200÷6300 - - - n
Residual current relay with external transformer ABB SACE circuit breaker can be combined also with the residual current relays RCQ 020/A with separate toroid in order to fulfill the requirements when the installation conditions are particulary restrictive, such as with circuit breakers already installed, limited space in the circuit breaker compartment etc. Thanks to the settings characteristics of the residual current and of the trip times, the residual current relays with external transformer can be easily installed also in the final stages of the plant; in particolar, by selecting the rated residual current I∆n=0.03A with instantaneous tripping, the circuit-breaker guarantees protection against indirect contact and represents an additional measure against direct contact also in the presence of particulary high earth resistance values. Such residual current relays are of the type with indirect action: the opening command given by the relay must cause the tripping of the circuit-breaker through a shunt opening release (to be provided by the user). Residual current relays SACE RCQ 020/A Power supply voltage AC [V] 115-230…415 Operating frequency [Hz] 45÷66 TripThreshold adjustement I∆n [A] 0.03-0.05-0.1-0.3-0.5-1-3-5-10-30 Trip time adjustement [s] Inst-0.1-0.2-0.3-0.5-0.7-1-2-3-5

-Emax空气断路器：•额定不间断电流为630A至1600A的断路器Emax X1的PR331、PR332、PR333 LSIG电子脱扣器空气断路器配有电子脱扣器类型PR121、PR122、PR123 LSIG，用于断路器Emax E1至E6，额定不间断电流为400A至6300APR332、PR333电子脱扣器，带剩余电流集成保护，适用于额定不间断电流为630A至1600A的断路器Emax X1带有剩余电流集成保护的PR122和PR123电子脱扣器，用于断路器Emax E1至E6，额定不间断电流为400A至6300A PR332 PR333 LIRc PR122 LIRc PR331 PR332 PR333 LSIG PR121 PR122 LSIG A-AC A-AC-AC--X1 400÷1600 n-E1 400÷1600-n-E2 400÷2000-n-E3 400÷3200-n-n E4 1250÷4000--n E6 3200 6300-n
带外部变压器的剩余电流继电器ABB SACE断路器也可与带独立环形线圈的剩余电流继电器RCQ 020/A组合，以满足安装条件特别限制时的要求，例如已安装断路器，断路器隔间内的空间有限等。由于剩余电流和跳闸时间的设置特点，带外部变压器的剩余电流继电器也可以轻松安装在电厂的后阶段；特别是，通过选择额定剩余电流I∆n=0.03A，瞬时跳闸时，断路器保证防止间接接触，并代表在存在特殊高接地电阻值的情况下防止直接接触的额外措施。此类剩余电流继电器为间接动作型：继电器发出的断开指令必须通过并联断开脱扣器（由用户提供）使断路器跳闸。剩余电流继电器SACE RCQ 020/A电源电压AC[V]115-230…415工作频率[Hz]45÷66阈值调整I∆n[A]0.03-0.05-0.1-0.3-0.5-1-3-5-10-30跳闸时间调整[s]指令-0.1-0.2-0.3-0.5-0.7-1-2-3-5