ABB REJ603 Self-Powered Feeder Protection Relay

ABB REJ603 Self-Powered Feeder Protection Relay Supplier and Exporter in India

ARP IMPEX supplies and exports ABB REJ603 self-powered feeder protection relays from India for ring main units, secondary distribution switchgear, package substations and distribution transformer protection.

ABB REJ603 is a current-transformer-powered protection relay mainly used where a separate auxiliary power supply is not available or cannot be guaranteed. The relay takes the power required for protection operation from the connected current transformers, making it a practical choice for RMUs, remote substations and secondary distribution networks.

REJ603 provides phase overcurrent, short-circuit, earth-fault and thermal overload protection. It can also be used for distribution transformer feeders, with transformer inrush detection helping avoid unnecessary tripping during transformer energisation.

ARP IMPEX handles requirements for new installations, RMU projects, plant maintenance and ABB REJ603 replacement relays. Buyers can send the complete ABB part code or an existing relay nameplate for pricing and availability.

Contact us if you are looking for an ABB REJ603 supplier in India, an ABB self-powered relay for RMU, a REJ603 replacement relay or an ABB feeder protection relay for secondary distribution switchgear.

Request a Quote for ABB REJ603

For ABB REJ603 price and availability, please share:

• Complete ABB REJ603 part code or order code
• Required quantity
• Destination country
• Required delivery schedule

For an existing replacement, a clear photograph of the relay nameplate is normally enough to start the enquiry.

Why Buy ABB REJ603 from ARP IMPEX?

• Supply against complete ABB order code
• Support for existing REJ603 replacement requirements
• Part-code and nameplate checking
• Support for 1 A and 5 A versions
• Self-powered and dual-powered requirements
• Quotations for single units and project quantities
• Technical datasheets with quotation
• Export packing and international shipping assistance
• Supply for RMU manufacturers, EPC contractors and panel builders
• Support for utility and industrial maintenance requirements

ABB REJ603 Models and Versions

ABB REJ603 is one self-powered protection relay family. Buyers may come across different product versions and hardware arrangements in existing installations.

ABB REJ603 Version 3.0

REJ603 Version 3.0 is available with conventional current-transformer inputs.

Main ordering options include:

• 1 A current input version
• 5 A current input version
• Self-powered arrangement
• Dual-powered arrangement
• Optional binary input
• Remote-trip option
• Configuration B

The exact variant should be confirmed from the full ABB order code.

Older ABB REJ603 Version 1.5

Older REJ603 Version 1.5 relays are still found in existing RMUs and secondary distribution panels.

These units may be available with:

• HMI
• Without HMI
• Different physical and terminal arrangements compared with later versions

For an ABB REJ603 Version 1.5 replacement, send the complete nameplate photograph before ordering. Matching only the REJ603 model number is not recommended.

Technical Specifications

• Brand: ABB
• Product family: Relion 605 Series
• Model: REJ603
• Product type: Self-powered feeder protection relay
• Main application: Feeder and distribution transformer protection
• Standard configuration: Configuration B
• Power supply: Self-powered from current transformers
• Dual-powered option: Available
• Phase-current inputs: 3
• Earth/residual-current input: 1
• Current-input options: 1 A or 5 A
• Phase overcurrent stages: 3
• Earth-fault stages: 2
• Thermal overload protection: Available
• Transformer inrush detection: Available
• Protection setting groups: 2
• Earth-current measurement: Calculated from phase currents or measured through external CBCT
• Optional binary input: Available
• Remote trip: Available on applicable version
• Trip output: Impulse trip output
• Signalling outputs: Available
• Event recording: Available
• Disturbance recording: Available
• Local HMI: Available
• USB power/access: Available for testing and fault-data access
• Operating temperature: Approximately –25°C to +55°C
• Installation altitude: Up to 2,000 metres
• Front protection: IP54 class
• Mounting: Flush panel mounting

The exact current input, power arrangement, binary input and terminal configuration depend on the complete ABB REJ603 order code.

Features

• Self-powered operation from current transformers
• No normal external auxiliary supply required for protection
• Three-stage phase overcurrent protection
• Short-circuit protection
• Two-stage earth-fault protection
• Thermal overload protection
• Transformer magnetising inrush detection
• Feeder and distribution transformer protection
• Internal residual-current calculation
• External core-balance CT support
• 1 A and 5 A CT versions
• Self-powered and dual-powered variants
• Two protection setting groups
• Definite-time protection characteristics
• Inverse-time protection characteristics
• Optional remote trip
• Current measurement
• Earth-current measurement
• Thermal-level monitoring
• Event recording
• Disturbance recording
• Built-in relay supervision
• Circuit-breaker test trip
• USB access for testing and stored fault information
• Compact design for RMU and secondary switchgear

Self-Powered Operation

The main reason buyers select REJ603 is its self-powered operation.

The relay takes operating power from the feeder current transformers, so it can provide protection even where a normal station DC supply is not available.

This makes ABB REJ603 self-powered protection relays useful for:

• Ring main units
• Remote substations
• Unmanned substations
• Package substations
• Secondary distribution switchgear
• Distribution transformer feeders

Dual-powered versions are also available where an auxiliary supply is required for additional functions.

Feeder and Transformer Protection

REJ603 covers the main current-based protection required for many secondary distribution feeders.

Protection functions include:

• Phase overcurrent
• Short circuit
• Earth fault
• Thermal overload
• Transformer inrush supervision

Transformer inrush detection helps prevent an unnecessary trip when a transformer is energised and temporarily draws high magnetising current.

For sensitive earth-fault requirements, an external core-balance CT can be connected instead of relying only on internally calculated residual current.

Applications

ABB REJ603 is commonly used for:

• Ring Main Unit protection
• RMU circuit-breaker feeder protection
• Secondary distribution feeder protection
• Incoming feeder protection
• Outgoing feeder protection
• Medium-voltage cable feeder protection
• Distribution transformer protection
• Transformer feeder panels
• Package substations
• Compact substations
• Short-circuit protection
• Phase overcurrent protection
• Earth-fault protection
• Sensitive earth-fault protection with CBCT
• Thermal overload protection
• Remote substations
• Unmanned substations
• Substations without reliable auxiliary DC supply
• Utility distribution networks
• Industrial power distribution
• Infrastructure substations
• Rural distribution systems
• Existing ABB REJ603 replacement requirements

Industries and Buyers Using ABB REJ603

Typical REJ603 requirements come from:

• Electricity distribution utilities
• RMU manufacturers
• MV switchgear manufacturers
• EPC contractors
• Electrical panel builders
• Package substation manufacturers
• Industrial substations
• Infrastructure projects
• Manufacturing plants
• Mining projects
• Water and wastewater projects
• Utility maintenance contractors

ABB REJ603 Replacement

ABB REJ603 has been supplied in different versions, so the complete order code should be checked before ordering a replacement.

Existing REJ603 units may differ in:

• Product version
• 1 A or 5 A current input
• Self-powered or dual-powered arrangement
• HMI arrangement
• Binary input option
• Remote-trip requirement
• Terminal arrangement

For an ABB REJ603 replacement relay, send:

• Complete ABB order code
• Clear nameplate photograph
• Required quantity
• Destination country

ABB REJ603 vs ABB REF601

Both REJ603 and REF601 are used for feeder protection, but they serve different requirements.

ABB REJ603 is commonly selected when:

• Self-powered protection is required
• Auxiliary power is unavailable
• The application is an RMU or secondary switchgear
• Basic overcurrent and earth-fault protection is required

ABB REF601 is generally considered when:

• Auxiliary supply is available
• Feeder protection and breaker control are required
• Communication with another system is required
• Additional feeder monitoring functions are needed

The correct relay should be selected based on the actual switchgear and protection requirements.
Contact us for ABB REJ603 price in India, ABB REJ603 self-powered feeder protection relay, ABB relay for RMU, REJ603 1 A or 5 A variant, existing REJ603 replacement or export quotation from India.