ABB REJ515 Overcurrent and Earth-Fault Relay

ABB REJ515 Overcurrent and Earth-Fault Relay Supplier and Exporter in India

ABB REJ515 Legacy Protection Relay – Price and Availability

ABB REJ515 is a numerical protection relay combining three-phase overcurrent and non-directional earth-fault protection in one unit. It was commonly used for feeders, busbars and medium-voltage distribution systems.

For ABB REJ515 price, availability or replacement enquiries, send the complete order code, clear nameplate photo, quantity and destination country.

Description

ARP IMPEX supplies and exports ABB REJ515 overcurrent and earth-fault protection relays for existing switchgear, substations and industrial distribution systems.

REJ515 combines the functions that ABB provided separately in relays such as REJ511 and REJ513. It monitors the three-phase currents as well as the residual or neutral current, giving one relay for both overcurrent protection and non-directional earth-fault protection.

The relay was mainly used for selective short-circuit and earth-fault protection in medium-voltage networks. It can trip the circuit breaker when a fault is detected, send alarm or signalling outputs and store fault information for later checking. ABB also identifies it for basic protection of busbars and feeders in utility substations and industrial power-distribution systems.

REJ515 has two overcurrent stages and two earth-fault stages. The lower stages can be set with definite-time or IDMT characteristics, while the higher stages can be used for faster operation during heavier faults. This gives the relay enough flexibility for feeder protection without turning it into a large multifunction protection terminal.

If you are looking for an ABB REJ515 replacement relay, old stock or matching spare, it is better to send the complete order number instead of only the model name.

Technical Specifications

• Brand: ABB
• Model: REJ515
• Product type: Combined overcurrent and earth-fault relay
• Product status: Not active since 2009
• Main application: Medium-voltage feeder and busbar protection
• Phase current inputs: 3
• Phase current rating: 1 A / 5 A
• Earth-fault current input: 0.2 A / 1 A
• Rated frequency: 50 / 60 Hz selectable
• Low-set overcurrent stage: Definite-time or IDMT
• High-set overcurrent stage: Instantaneous or definite-time
• Low-set earth-fault stage: Definite-time or IDMT
• High-set earth-fault stage: Instantaneous or definite-time
• Circuit-breaker failure protection: Included
• Disturbance recorder: Included
• Binary input: Galvanically isolated
• Communication: Optical PC interface using SPA protocol
• Self-supervision: Continuous hardware and software monitoring

The exact auxiliary supply and relay hardware should be confirmed from the ABB order code before quotation.

Features

• Three-phase overcurrent protection
• Short-circuit protection
• Non-directional earth-fault protection
• Low-set overcurrent stage
• High-set overcurrent stage
• Low-set earth-fault stage
• High-set earth-fault stage
• Definite-time and IDMT operation
• Circuit-breaker failure protection
• Fault and disturbance recording
• Flexible trip and signalling outputs
• External blocking or reset through binary input
• Optical communication for relay settings
• Non-volatile setting memory
• Continuous internal self-supervision

One of the practical differences between REJ515 and REJ513 is that REJ515 adds earth-fault protection to the overcurrent functions. REJ513 is mainly an overcurrent relay, while REJ511 is the dedicated earth-fault model.

Applications

ABB REJ515 can be used for:

• Medium-voltage feeder protection
• Incoming feeder protection
• Outgoing feeder protection
• Busbar protection
• Cable feeder protection
• Short-circuit protection
• Non-directional earth-fault protection
• Industrial power-distribution systems
• Utility substations
• Switchgear panels
• Backup overcurrent protection
• Backup earth-fault protection
• Two-stage load shedding
• Existing ABB numerical relay installations

ABB states that REJ515 can also be used where single-, two- or three-phase overcurrent protection is required together with non-directional earth-fault protection.

ABB REJ515 Protection Functions

Overcurrent Protection

REJ515 includes:

• Three-phase low-set overcurrent stage
• Three-phase high-set overcurrent stage

The low-set stage can use definite-time or IDMT operation, while the high-set stage can operate instantaneously or with a selected time delay.

Earth-Fault Protection

The relay also includes:

• Low-set non-directional earth-fault stage
• High-set non-directional earth-fault stage

This makes REJ515 suitable where the buyer wants both feeder overcurrent and earth-fault protection from one relay instead of separate devices.

Related ABB REJ Relay Range

ABB’s older multipurpose numerical relay range included several related models:

• ABB REJ511 – Earth-fault relay
• ABB REJ513 – Overcurrent relay
• ABB REJ515 – Combined overcurrent and earth-fault relay
• ABB REJ517 – Directional earth-fault relay
• ABB REJ521 – Earth-fault relay
• ABB REJ523 – Overcurrent relay
• ABB REJ525 – Combined overcurrent and earth-fault relay
• ABB REJ527 – Directional earth-fault relay
• ABB REU513 / REU523 – Voltage relays

REJ515 itself is a specific relay model rather than a large product family with multiple C1/C2/C3 variants.

ABB REJ515 Legacy Spare and Replacement Enquiries

For an existing REJ515 requirement, please send:

• Complete ABB REJ515 order code
• Clear relay nameplate photograph
• Quantity required
• Destination country
• Required delivery date

This helps identify the correct hardware before checking ABB REJ515 availability, price or replacement options.

Why Buy ABB REJ515 from ARP IMPEX?

ARP IMPEX supplies ABB protection relays for utilities, industrial plants, EPC contractors, panel builders, maintenance companies and electrical traders.

We can assist with:

• ABB REJ515 part-code checking
• Legacy relay availability
• Existing relay matching
• Single-unit and bulk requirements
• ABB technical documentation
• Export packing
• International shipment

Request a Quote for ABB REJ515

For ABB REJ515 price and availability, send the complete relay code, nameplate photo, quantity and destination country.

Send your ABB REJ515 part number and quantity to ARP IMPEX for legacy spare availability, replacement enquiry and export quotation.