SPAU 140 C ABB Synchro-check Relay Voltage-check Relay 50Hz 250V Ac/dc
SPAU 140 C ABB Synchro-check Relay Voltage-check Relay 50Hz 250V Ac/dc
The ABB SPAU 140 C is a compact, multifunctional protection relay designed for reliable overcurrent and earth fault protection in medium-voltage (MV) distribution systems. As part of ABB’s legacy SPA (Single-Phase Auxiliary) relay family, the SPAU 140 C provides cost-effective, robust protection for feeders, transformers, motors, and capacitor banks in industrial plants, utilities, mining operations, and commercial power networks.
Engineered for simplicity and durability, the SPAU 140 C combines definite time overcurrent (DTOC) and inverse time overcurrent (ITOC) protection with sensitive earth fault detection, making it ideal for applications where space is limited but performance and compliance with international standards—such as IEC 60255—are critical. Its modular design, front-panel LED indicators, and easy-to-set rotary switches enable quick installation, commissioning, and troubleshooting—even in harsh environments.
Though part of ABB’s mature product portfolio, the SPAU 140 C remains widely installed globally and is supported through ABB’s long-term service commitment for spare parts and technical documentation.
Product Overview: ABB SPAU 140 C
| Manufacturer | ABB |
| Product Family | SPA Series Protection Relays |
| Model Number | SPAU 140 C |
| Primary Function | Overcurrent and Earth Fault Protection Relay |
Product details pictures
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