ABB SPAM 150 C PROTECTION RELAY

About ABB SPAM 150 C PROTECTION RELAY

ABB SPAM 150 C PROTECTION RELAY

The combined multifunction motor protectionrelay is a secondary relay device which is connected to the current transformers of the protected motor drive. The three phase currentsand the neutral current of the protected deviceare continuously measured and on the basis ofthis measurement, the thermal condition of themotor is calculated and the faults of the networkare detected. In fault situations the protectiveunits of the relay provide alarm or trip thecircuit-breaker.By appropriate programming of the output relay matrix, various starting, prior alarm or restart inhibit signals are received as contactfunctions. This contact information is used e.g.for the blocking of co-operating protective relays located upstreams, for connection to annunciator units etc.The motor protection relay contains one external logic control input, which is activated by acontrol signal on the auxiliary voltage level. Theinfluence of the control input on the relay isdetermined by programming switches of themeasuring module. The control input can beused either for blocking one or more of theprotective stages, for carrying out an externaltrip order, for inhibiting a restart attempt or forresetting a latched output relay in the manualreset mode.

Reliable Protection for Motors and Feeders

Engineered to deliver precise overcurrent, earth fault, and phase failure protection, the ABB SPAM 150 C relay enhances system safety and minimizes downtime. Its microprocessor technology and quick operating time ensure accurate detection and response to faults in feeder and motor circuits, making it ideal for industrial and utility environments.


Intuitive Operation and Status Monitoring

This relay is equipped with LED indicators that provide real-time status and fault information, allowing operators to swiftly identify and address system events. The manual and automatic reset options further improve flexibility, while easy-to-access screw-type rear terminals facilitate straightforward installation and maintenance.


Built to Withstand Harsh Conditions

Constructed from flame-retardant ABS plastic, the ABB SPAM 150 C is designed for durability and long service life. It reliably operates in challenging conditions, withstanding temperatures from -10C to +55C, humidity up to 95% RH non-condensing, and high dielectric strength, ensuring consistent performance in demanding settings.