MOTOR CIRCUIT-BREAKER MS132-10KT 6,3-10,0A

Switch for protection of the control voltage transformer. Fuseless protection for the transformer primary side. The switch designed for transformer protection is specifically engineered as a fuseless protective device to provide short-circuit and overload protection for the control voltage transformer's primary side. In addition to precise protection, the transformer can be manually and safely connected to and disconnected from the network. Cable protection and isolation properties are required for the primary-side connection. Protection of the winding can only be achieved through primary-side protection. During transformer energization, a very high current surge (inrush current) is generated, typically ranging from 8 to 20 times the transformer’s rated current. Therefore, a standard protective device cannot be used as a transformer protector. The ABB MS132-KT protective switch is therefore an excellent choice for control voltage transformer protection. The three-pole MS132-KT protective switch series has a width of only 45 mm and a rated current up to 25 A. The MS132-KT protective switch clearly indicates the type of trip event—whether due to overload or short-circuit—enhancing user safety and accelerating the return of the equipment from fault condition to production. Additionally, the protective switch features isolation capability, temperature-compensated overload tripping, and a lockable rotary switch with a clear TRIP indication. The accessory range for the protective switch, including auxiliary and alarm contacts, undervoltage and operating voltage coils, and supply connectors, is fully compatible with motor protective switches MS116, MS132, and MS165. As a new offering, we also provide self-clamping auxiliary contacts with quick-spring connectors for rapid installation. Features of the quick-spring connector version

• Isolation capability, overload and 100 kA short-circuit protection compactly integrated in a single device.
• Protection of transformer winding short-circuit via primary-side protection.
• Temperature-compensated overload protection operating temperature range: -25 ... +70 °C
• Three-position lockable rotary switch: OFF - TRIP - ON.

This product description is an automated translation of the original Finnish description.