Overview：
ABB SPAJ110C Earth-fault Relay
ABB SPAJ110C is a secondary protection relay primarily used in effectively grounded or low-resistance grounded power systems. The relay provides selectable fault protection for lines, transformers, generators, and motors, and can function as either primary or backup protection.
Core function: The ABB SPAJ110C detects ground fault current (zero-sequence current I₀) in the system and sends an alarm based on the set values and time-delay characteristics.
Measurement method: The ABB SPAJ110C obtains ground fault current through the residual current connection of three-phase current transformers or a window-type zero-sequence current transformer.
Application: The ABB SPAJ110C, when configured, can work in conjunction with a residual voltage relay to achieve locking/unlocking functions.
Technical data：
| Parameter | Details |
|---|---|
| Product Model | SPAJ110C |
| Related models |
SPAJ110C-AA SPAJ110CDA |
| Input Impedance | • 1A version: < 100 mΩ • 5A version: < 20 mΩ |
| Dynamic Withstand Current (Half-wave Value) | 250 × InIn |
| Power Consumption | • Quiescent: ~4 W • Operating: ~6 W |
| Protection (Power Supply Module) | 1 A slow-blow fuse (F1) mounted on the PCB of the module |
| External Control Input | • Terminals: 10-11 • Control Voltage Range: 18...265 V DC or 80...265 V AC • Current Consumption (when activated): 2...20 mA |
Features：
- Inverse-time characteristics: The SPAJ110C provides inverse-time curves, including normal inverse, very inverse, extremely inverse, and long-time inverse characteristics.
- Serial communication: The SPAJ110C is equipped with a serial interface that can be connected to an optical fiber object bus and substation/network control systems.
- Information display: The SPAJ110C is equipped with a digital display that allows real-time viewing of setting values, measured neutral current, and other information.
- Auxiliary control: The SPAJ110C provides start-signal contact outputs and includes one optically isolated logic input for receiving remote blocking signals.
Questions & Answers
💡 FAQ
Q: What type of auxiliary power supply does the ABB SPAJ110C relay require?
A: Two power supply modules are available:
- SPTU 240 S1 type: Wide range 80…265 V C/DC.
- SPTU 48 S1 type: 18…80 V DC.
Q: How many protection stages does the ABB SPAJ110C relay have, and what are their characteristics?
A: The ABB SPAJ110C relay has two independent protection stages:
- Low-set stage (I₀>): Selectable definite-time or inverse-time characteristics.
- High-set stage (I₀>>): Definite-time characteristic only.
Q: What is the warranty?
A: 1 year
Q: What is the return and exchange policy?
A: Returns or exchanges are accepted within 7 days of receiving the goods if there are any quality issues, excluding damage caused by human error or misuse.
Q:What are the available shipping methods?
A: FedEx, DHL, UPS, and others.
Contact us
Our address
Room 1904, Building B, Diamond Coast, No. 96 Lujiang Road, Siming District, Xiamen, Fujian, China
Phone Number
+86 18059276824
sales7@nseauto.com
why choose us?
We specialize in providing industrial automation and control solutions, including ABB, GE, Bently Nevada, and other critical DCS/PLC components. Here's why customers trust us for their industrial automation needs:
one-stop solution
professional team
Quality Assurance
After-sales service
Our Partners
Hot Tags: abb spaj110c earth-fault relay, abb spaj110c earth-fault relay manufacturers, suppliers, transformers, industrial networking, CI541V1, electrical components, cable management, drives