ABB SPAS 120 C Directional Earth-Fault Relay

ABB SPAS 120 C Directional Earth-Fault Relay Supplier and Exporter in India

ABB SPAS 120 C Replacement – REX610 and REX615 Retrofit

ABB SPAS 120 C is a legacy directional earth-fault relay used in older feeder protection panels and substations. ABB lists the relay as not active since 2009, so most current enquiries are for a failed relay replacement, maintenance spare, shutdown stock or modernisation of an existing protection panel.

ABB has documented two retrofit routes for SPAS 120 C:

• SPAS 120 C to REX610
• SPAS 120 C to REX615

SPAS 120 C is specifically included in ABB’s REX610 retrofit documentation and also appears in ABB’s current SPACOM-to-REX615 retrofit program.

For an ABB SPAS 120 C replacement relay or retrofit enquiry, please send:

• Complete SPAS 120 C order number
• Clear photograph of the existing relay nameplate
• Required quantity
• Destination country
• Required delivery schedule

For a retrofit enquiry, it is also useful to send the existing relay settings and panel details if available.

ARP IMPEX supplies and exports ABB SPAS 120 C legacy relays and handles requirements for matching spares, discontinued ABB SPACOM relays and REX610 / REX615 retrofit projects.

Description

ARP IMPEX is a supplier and exporter of ABB SPAS 120 C directional earth-fault relays for existing switchgear, substations, feeder protection panels and industrial maintenance requirements.

SPAS 120 C is an older ABB SPACOM relay used mainly for selective directional earth-fault protection of feeders. ABB specifies its use in isolated-neutral and impedance-earthed networks. It can also be used for earth-fault protection of power generators and large motors.

The relay has two directional earth-fault stages. This allows it to identify earth faults according to the direction of fault current rather than responding only to the magnitude of current. For a buyer, the important point is that SPAS 120 C was used where directional earth-fault protection

Today, most SPAS 120 C enquiries come from buyers maintaining older switchgear or feeder protection panels. They may need a replacement for a failed relay, a spare for an upcoming shutdown, or a supported upgrade where the original unit is no longer available.

ABB has documented retrofit options using REX610 and REX615, so buyers planning to modernize an existing SPAS 120 C installation can also contact us with the relay nameplate and available panel details.

If the complete order number is not available, send us a clear relay nameplate photograph for checking.

Request a Quote for ABB SPAS 120 C

For a quick quotation, please share:

• ABB SPAS 120 C complete order code
• Quantity
• Destination country
• Required delivery date
• Clear nameplate photograph for replacement requirements

If available, also mention:

• 1 A or 5 A current input
• 100 V or 110 V voltage input
• 50 Hz or 60 Hz
• Auxiliary supply voltage
• Original SPAS 120 C spare or retrofit requirement

For international buyers, part code + quantity + destination country are normally enough to start checking availability.

Why Buy ABB SPAS 120 C from ARP IMPEX?

ARP IMPEX handles ABB relay enquiries for existing installations, maintenance and replacement projects.

We can assist with:

• SPAS 120 C part-code checking
• Nameplate matching
• Discontinued ABB relay enquiries
• Matching legacy SPACOM spares
• Single-unit and multiple-quantity quotations
• Plant shutdown and maintenance requirements
• REX610 retrofit enquiries
• REX615 retrofit enquiries
• Technical datasheets with quotation
• Export packing and international shipping support

We accept enquiries from utilities, EPC contractors, panel builders, industrial plants, maintenance companies and electrical traders.

ABB SPAS 120 C Model and Order Variants

SPAS 120 C is one specific directional earth-fault relay model, not a large product family.

ABB supplied the relay under different order numbers according to the frequency, auxiliary supply and whether an RTXP 18 test adapter was included.

SPAS 120 C Without Test Adapter

ABB documented the following order-number group:

• RS 431 010-AA
• RS 431 010-CA
• RS 431 010-DA
• RS 431 010-FA

SPAS 120 C With RTXP 18 Test Adapter

The corresponding order-number group is:

• RS 431 210-AA
• RS 431 210-CA
• RS 431 210-DA
• RS 431 210-FA

The suffix identifies the frequency and auxiliary supply:

• AA: 50 Hz, 80–265 V AC/DC
• CA: 50 Hz, 18–80 V DC
• DA: 60 Hz, 80–265 V AC/DC
• FA: 60 Hz, 18–80 V DC

For an exact replacement, the complete RS 431… order number is therefore more useful than only mentioning SPAS 120 C.

Technical Specifications

• Brand: ABB
• Series: SPACOM / SPAS
• Model: SPAS 120 C
• Product type: Directional earth-fault protection relay
• Product status: Legacy / not active since 2009
• Protection: Two-stage directional earth-fault protection
• Low-set stage: Directional earth-fault, definite-time operation
• High-set stage: Directional earth-fault, instantaneous or definite-time operation
• Current input: 1 A or 5 A
• Voltage input: 100 V or 110 V
• Rated frequency: 50 Hz or 60 Hz
• Operating characteristic: I₀sinφ or I₀cosφ
• Characteristic selection: Manual or external control
• Auxiliary supply option: 80–265 V AC/DC
• Low-voltage supply option: 18–80 V DC
• Communication: Fibre-optic SPA serial bus
• Self-supervision: Built-in
• Panel protection: IP54 when panel mounted

The exact frequency and auxiliary supply should be confirmed from the complete order code or relay nameplate.

Features

• Two-stage directional earth-fault protection
• Low-set earth-fault stage
• High-set earth-fault stage
• Direction-sensitive fault detection
• Definite-time protection
• Instantaneous high-set operation where selected
• I₀sinφ and I₀cosφ operating characteristics
• Remote selection of operating characteristic
• Configurable output relay functions
• Trip and alarm outputs
• Digital display of settings and measured values
• Recorded fault information
• Fibre-optic SPA communication
• Internal hardware and software self-supervision
• 1 A and 5 A current inputs
• 100 V and 110 V voltage inputs

For a replacement buyer, the main points to check are the order number, current input, voltage input, auxiliary supply and existing relay settings.

Applications

SPAS 120 C is mainly used for:

• Directional feeder earth-fault protection
• Medium-voltage feeder protection
• Isolated-neutral distribution networks
• Impedance-earthed networks
• Substation feeder panels
• Distribution switchgear
• Generator earth-fault protection
• Large motor earth-fault protection
• Industrial power distribution
• Existing ABB SPACOM protection panels
• Legacy switchgear maintenance
• Plant shutdown spare requirements
• SPAS 120 C replacement projects
• REX610 retrofit projects
• REX615 retrofit projects

ABB specifically identifies selective feeder protection in isolated-neutral and impedance-earthed networks, along with generator and large-motor earth-fault protection, as SPAS 120 C applications.

ABB SPAS 120 C Replacement

Because SPAS 120 C is no longer an active ABB product, many enquiries today are connected with existing installations rather than new protection projects.

Typical buyer requirements include:

• Original ABB SPAS 120 C spare
• Replacement for a failed relay
• Matching relay for existing switchgear
• Plant shutdown spare
• Maintenance stock
• Discontinued ABB SPACOM relay
• Modern replacement for an old protection panel

For an exact legacy spare, send:

• Complete RS order number
• Nameplate photograph
• Quantity
• Destination country

This helps avoid supplying the wrong frequency or auxiliary-supply version.

ABB SPAS 120 C Replacement with REX610

ABB has a documented SPACOM-to-REX610 retrofit program for SPAS 120 C. ABB’s product guide identifies the applicable REX610 replacement configuration as REX6101GAB######, with a dedicated retrofit program order code RRPSPAS120CREX610.

The retrofit approach is intended to make replacement of selected SPACOM relays easier by using an adapter arrangement and wiring prepared for the old relay connections. ABB’s installation documentation specifically includes pre-wired CT and VT connections for SPAS 120 C.

A REX610 retrofit may be considered when:

• The original SPAS 120 C is difficult to source
• A relay has failed
• Long-term support is required
• An older feeder panel is being upgraded
• Modern communication is required

The final relay configuration and settings still need to be checked for the actual installation.

ABB SPAS 120 C Replacement with REX615

ABB also currently lists SPAS 120 C in its SPACOM-to-REX615 retrofit program. The program includes a REX615 relay, retrofit connector kit and documentation, with additional configuration and installation support available.

This gives buyers another ABB-supported modernisation route where broader protection, control or communication requirements are involved.

For a SPAS 120 C to REX615 retrofit, useful information includes:

• Existing SPAS 120 C nameplate
• Current and voltage inputs
• Auxiliary supply
• Existing relay settings
• Trip and alarm arrangement
• Existing panel wiring

REX615 should be treated as an ABB-supported retrofit solution, rather than simply ordering a new relay without checking the existing application.

Information Required for ABB SPAS 120 C Quotation

For an Original SPAS 120 C Spare

Please send:

• Complete ABB order number
• Clear relay nameplate
• Quantity
• Destination country
• Required delivery date

For a REX610 or REX615 Retrofit

Please also share, where available:

• 1 A or 5 A current input
• 100 V or 110 V voltage input
• Auxiliary supply
• Existing protection settings
• Existing panel drawing

Contact ARP IMPEX for ABB SPAS 120 C price, SPAS 120 C replacement relay, discontinued ABB SPAS 120 C availability, ABB directional earth-fault relay supplier and exporter in India, ABB SPACOM relay spare, SPAS 120 C to REX610 retrofit or SPAS 120 C to REX615 retrofit quotation for international supply.