ABB 1SVR508100R0000 CT-ERC.12 ON-Delay Timer Relay 1C/O 24-48VDC/24-240VAC 4A 250V

The ABB CT-ERC.12 (SKU: 1SVR508100R0000) is an ON-delay timer relay with a 1 changeover contact output, designed for precise time-delayed switching in industrial control panels and automation systems. Part of the ABB CT-C series, the CT-ERC.12 accepts a wide supply voltage range of 24–48 V DC and 24–240 V AC, making it highly versatile across global installations. With a compact 17.5 mm wide DIN-rail footprint and a rated contact current of 4 A at 250 V, it delivers reliable performance in a space-saving package.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — approved for the UK market post-Brexit
• cULus: Certified by UL for both US (UL) and Canadian (cUL) markets
• UL508: UL standard for industrial control equipment
• CSA / CAN/CSA C22.2 No.14: Canadian Standards Association certification for industrial control equipment
• CCC: China Compulsory Certification — required for the Chinese market
• DNV GL: Det Norske Veritas — certified for marine and offshore applications
• IEC 61812-1: International standard for time relays for industrial and residential use
• IEC/EN 63000: Technical documentation standard for RoHS assessment of electrical and electronic equipment
• REACH: Compliant with EU regulation on registration, evaluation, authorisation and restriction of chemicals
• RoHS: Restriction of Hazardous Substances — free from restricted hazardous materials

Applications & Use Cases

• Motor start-up sequencing and star-delta transition timing in industrial drives
• Conveyor and process line interlocking with time-delayed activation
• HVAC and building automation for fan and pump delayed starts
• Control panel time-delay functions in manufacturing and assembly lines
• Marine and offshore control systems (DNV GL certified)
• Machine safety circuits requiring timed output switching

Frequently Asked Questions

Q: What supply voltages does the CT-ERC.12 accept?
A: The CT-ERC.12 accepts 24–48 V DC and 24–240 V AC, covering a broad range of global control supply standards.

Q: What is the output contact configuration?
A: The CT-ERC.12 features a single 1 C/O (1 changeover) output contact rated at 4 A / 250 V.

Q: Is the CT-ERC.12 suitable for marine applications?
A: Yes — the CT-ERC.12 carries DNV GL certification, making it approved for marine and offshore control applications.

Q: What DIN rail width does the CT-ERC.12 occupy?
A: The CT-ERC.12 has a width of 17.5 mm, making it one of the most compact timer relays in its class for dense panel layouts.