ABB SPAJ140C Overcurrent & Earth-Fault Relay | Original Spare Parts

ABB SPAJ140C — Combined Overcurrent & Earth-Fault Relay | Original Spare Parts

The ABB SPAJ140C is a microprocessor-based combined overcurrent and earth-fault protection relay purpose-built for medium-voltage feeder and transformer applications in demanding industrial environments. As a 100% Brand New and Factory Sealed unit, the SPAJ140C delivers the precision fault detection, flexible IDMT time-current characteristics, and integrated SPA-bus communication that protection engineers in Industrial Automation, Oil & Gas, and Power Generation have relied on for decades. This Original New spare part is sourced directly from authorized channels, ensuring full traceability and compliance with IEC 60255 standards.

Procurement managers sourcing replacement or expansion units for existing ABB SPACOM or PYRAMID protection cubicles will find that the ABB SPAJ140C integrates seamlessly into established PLC System and DCS architectures without costly retrofits. Whether you are maintaining a legacy substation or commissioning a new control module bay, this relay eliminates the risk of counterfeit components — every unit ships with original ABB documentation and a certificate of conformity. Fast Global Shipping to 180+ countries ensures minimal disruption to your production schedule.

Backed by a 12-month warranty and dedicated pre-sales engineering support, the SPAJ140C is the dependable choice for protection specialists who cannot afford downtime. Contact our team today for pricing, lead time, and datasheet access.

Technical Specifications & Selection Guide

Selection Tip: Choose the SPAJ140C for radial feeder and transformer incomer applications requiring combined overcurrent and earth-fault protection with SPA-bus SCADA integration. For directional earth-fault capability in ring-bus or meshed networks, consider the ABB SPAJ141C. For full motor protection (thermal overload + negative-sequence), the SPAM150C is recommended.

Core Features & Technical Advantages

• ✅ Three-Stage Overcurrent Protection (I> / I>> / I>>>) — Independent time-delay settings per stage enable robust coordination with upstream fuses, MCCBs, and downstream relays across complex protection hierarchies.
• Dual-Stage Earth-Fault Detection (I0> / I0>>) — Sensitive ground-fault detection down to low-resistance earth faults, protecting personnel and heavy-duty transformer insulation from sustained fault currents.
• ✅ Full IDMT Curve Library — IEC Normal, Very Inverse, Extremely Inverse, and RI characteristics are all supported, providing precision coordination flexibility without external time-delay relays.
• ✅ RS-485 / SPA-Bus Communication — Native integration into ABB SPACOM and PYRAMID substation automation systems; compatible with SPA-ZC 22 protocol converters for Modbus RTU or DNP3 SCADA environments.
• ✅ 100-Event Time-Stamped Recorder — 1 ms resolution event log supports post-fault analysis, regulatory compliance reporting, and predictive maintenance programs.
• ✅ Continuous Self-Supervision & Watchdog — Internal hardware and software diagnostics run in real time; alarm output activates automatically on any detected failure, meeting E-E-A-T reliability standards for critical infrastructure.
• ✅ Wide Auxiliary Voltage Range — 24-250 V DC / 48-230 V AC input eliminates the need for dedicated auxiliary transformers in mixed-voltage substation designs.

Typical Application Scenarios

1. Oil & Gas Process Plants
Hazardous-area substations demand deterministic trip times and remote SCADA visibility. The SPAJ140C’s SPA-bus interface allows protection engineers to monitor and adjust settings remotely, reducing personnel entry into restricted zones and cutting incident response time by eliminating manual relay checks.

2. Medium-Voltage Feeder Protection in Industrial Plants
Radial MV feeders in chemical, petrochemical, and heavy manufacturing facilities rely on the SPAJ140C to isolate faulted sections within milliseconds, preventing cascade failures and protecting downstream control modules and motor drives from sustained fault energy.

3. Power Generation Auxiliary Boards
Generator auxiliary switchboards and unit transformer bays benefit from the high-set instantaneous element (I>>>), which clears close-in faults before they can propagate to generator windings — a critical requirement for maintaining grid stability and avoiding costly rewind repairs.

4. Water Treatment & Utility Infrastructure
Continuous-process utilities use the SPAJ140C’s 100-event recorder and SCADA connectivity to build a complete fault history database, supporting both predictive maintenance schedules and regulatory compliance audits without additional data-logging hardware.

5. Transformer Incomer & Outgoing Feeder Bays
The relay’s sensitive dual-stage earth-fault element detects high-impedance ground faults on transformer secondaries where conventional overcurrent relays may fail to operate — a common pain point in aging distribution infrastructure undergoing modernization.

Logistics & Professional Service

• ✅ Lead Time: Ships within 2-7 business days from verified stock; expedited 2-Day Shipping available on request for urgent plant shutdowns or emergency replacements.
• ✅ Fast Global Shipping: DHL Express, FedEx, and UPS to 180+ countries — full export documentation and commercial invoice provided for customs clearance.
• ✅ 1-Year Warranty: 12 months from delivery date covering manufacturing defects and functional failures under normal operating conditions; replacement or full refund arranged at no additional cost.
• ✅ Full Documentation Package: Original ABB datasheet, factory test report, and certificate of conformity supplied on request — essential for EOL Legacy Systems maintenance and regulatory audits.
• ✅ Technical Support for EOL Legacy Systems: Our engineering team provides pre-sales application guidance and post-sales commissioning support, including assistance with SPA-bus wiring, CT ratio selection, and protection coordination studies.

FAQ — Frequently Asked Questions

Q1: What is the current price of the ABB SPAJ140C, and do you offer volume discounts?
Pricing for the SPAJ140C varies based on order quantity, destination country, and current stock availability. We offer competitive tiered pricing for orders of 3+ units, with additional discounts for blanket purchase orders. Please contact sale@ninermas.com with your required quantity and delivery address for a formal quotation within 24 hours.

Q2: What is the lead time for the SPAJ140C if it is not in stock?
For in-stock units, shipment is arranged within 2-7 business days. If the SPAJ140C requires sourcing from our global supplier network, typical lead time is 2-4 weeks. Emergency procurement for plant shutdowns can often be expedited — contact us with your required delivery date and we will confirm feasibility immediately.

Q3: Can you provide an original ABB datasheet and certificate of origin for the SPAJ140C?
Yes. Every unit is supplied with the original ABB product datasheet, factory test certificate, and a certificate of conformity confirming 100% Original and Brand New status. Country-of-origin documentation (Switzerland) is available for customs and regulatory purposes upon request.

Q4: Is the SPAJ140C compatible with both 1 A and 5 A CT secondaries?
Yes. The relay supports selectable 1 A or 5 A nominal current inputs for both phase and earth-fault channels, making it directly compatible with the vast majority of medium-voltage CT installations in Industrial Automation and utility environments without interposing CTs.

Q5: Does the SPAJ140C support Modbus RTU or DNP3 communication?
The relay’s native protocol is ABB SPA-bus over RS-485. Modbus RTU or DNP3 integration requires an ABB SPA-ZC 22 or equivalent protocol converter. Our technical team can advise on converter selection and wiring for your specific PLC System or DCS architecture.

Q6: How do I verify the relay is genuine ABB and not a counterfeit?
All units sold through our store are sourced from authorized distributors and verified against ABB’s original serial number database where applicable. We provide full traceability documentation — including supplier chain records — and offer a 12-month functional warranty as our commitment to authenticity and quality.

✅ Ready to order or need a formal quotation? Send your inquiry to sale@ninermas.com or call +0086 187 5021 5667 for immediate assistance.

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