PKZM01 Pushbutton Operated MPCB Modular Motor Protective Circuit Breakers designed for use with add-on contactor modules and accessories (see below) which provide isolation, short circuit and thermal protection. The units are DIN-rail mounting and part of the xStart family of control gear products, and a range of connection and wiring accessories are available to speed up assembly work and minimise wiring errors.,Various enclosure options are available, see PKZM Enclosures range. Rated operating voltage 690Vac Operating temperature range -25°C to +55°C Temperature compensated range -5°C to +40°C Adjustable current trip level, 0.6 – 1.0 x nominal rating Short-circuit trip level (fixed) 14x nominal rating Single-phase-failure sensitivity to IEC60947-4-1 Simple two-button operation for starting and stopping motors May be locked in the "off" position Approvals UL, CSA, LROS, GL Standards IEC (EN60) 947-1 general, 947-2 Circuit breakers, 1-4 switch disconnectors, 1-5 Motor starters, 1-6 Electrical equipment of machines