REJ603BB401NN3XE

Overview

The REJ603BB401NN3XE is a self-powered feeder protection relay from ABB, designed for use in power systems. It offers advanced current sensing with adjustable CT settings and robust thermal and dynamic current withstand capabilities.

Physical Characteristics

• Width: 96 mm

• Height: 160 mm

• Depth: 150 mm

• Weight: ~0.8 kg (without HMI) / ~0.9 kg (with HMI)

Electrical Specifications

• Rated Frequency: 50/60 Hz ± 5 Hz

Phase Sensor Inputs

• Nominal Primary Current:

• CT1: 8–28 A

• CT2: 16–56 A

• CT3: 32–112 A

• CT4: 64–224 A

• CT5: 128–448 A

• Thermal Withstand Capability:

• Continuously: 2.5 x Ismax

• For 1 sec: 25 kA primary current

• For 3 sec: 20 kA primary current

• Dynamic Current Withstand: 62.5 kA primary current (Half-wave)

Earth Current Inputs

• Rated Current (In): 4 A

• Thermal Withstand Capability:

• Continuously: 4 A

• For 1 sec: 100 A

• Dynamic Current Withstand: 250 A (Half-wave value)

• Input Impedance: < 100 mΩ

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