REA101 Instantaneous Overcurrent Relay ABB

Specifications and Model Data

Model : REA101
Product Type : Instantaneous Overcurrent Relay

Main Function

Provides instantaneous overcurrent protection.
When the detected current exceeds the preset threshold, the relay operates immediately and sends a trip signal to the circuit breaker, ensuring rapid fault isolation.

Electrical Specifications

• Power supply : 24 – 220 V AC/DC

• Rated current : 1 A or 5 A

• Output contacts : 1 or 2 momentary NO (normally open) contacts

Physical Specifications

• Dimensions : ~108 × 65 × 123 mm (W × H × D)

• Weight : ~0.5 kg

• Installation method : Surface mounting or embedded mounting

Application

Widely used in industrial systems, power distribution networks, power plants, and substations where fast overcurrent protection is required.