Siemens MPCB Range 18-25 A with 1NO+1NC 3VU13 40-1MP00

The availability of machines and plants is a precondition for maximum productivity. Prolonged downtimes may not just be expensive but may also mean that customers begin to lose trust. Machines and plants should therefore be reliably protected against overload from the power supply system. In the event of a failure, motor starter protectors quickly disconnect the equipment from the supply, thus preventing expensive damage.

The motor starter protectors are compact motor starter protectors for currents up to 1-52 A which operate according to the current limiting principle. The devices are used for switching and protecting motors or other loads. They are fitted with instantaneous over current releases and inverse-time delayed overload relay. Motor starter protectors and contactors can be combined to form fuseless starter combinations. Th motor starter protectors are suitable for use in any climate. Motor Starter Protectors • for motor protection – 3VS13: 0.4~25 A – 3VS16: 6~52 A The characteristic curves of these motor starter protectors are specially laid-out for the overload and short-circuit protection of motors. The inverse-time delayed releases (“a releases”) are adjustable for setting the rated current of the motors to be protected. The instantaneous short-circuit releases (“n releases”) are fixed-set to 12 times the value so as to assure faultless starting of the motors.

Current Limiting is achieved in 3VS as follows In case of a short circuit, the contacts are opened electrodynamically by the short circuit current. The instantaneous overcurrent release, through the switching mechanism, trips all the three poles of the breaker. A large arc voltage is quickly built up in the arc chamber limiting the short circuit current. Thus ensures faster fault clearing Ambient temperature compensation upto 55°C hence no derating required upto 55°C.

Safety

• Trip Free Mechanism The breakers have a trip-free mechanism. Even by holding the toggle, tripping operation can not be stopped or blocked once it is started. Thus ensure positive opening in the event of fault.

• Positive ON/OFF indication through toggle switch

• Compact and space saving