ABB – 1SVR740100R0300 – CT‑ERS.21P On‑Delay Timer Relay, 24–240 VAC/DC

The ABB 1SVR740100R0300 (CT‑ERS.21P) is a versatile, single-function electronic on-delay timer relay from the CT‑S range. Designed for DIN-rail mounting, it supports a broad control voltage and offers precision timing for automation, lighting, motor control, and sequential operations.

Key Specifications:

• Model / Part #: CT‑ERS.21P / 1SVR740100R0300  

• Control Voltage: 24–240 VAC/DC, 50/60 Hz  

• Time Range: 0.05 s to 300 h across 10 selectable ranges  

• Outputs: 2× change-over (SPDT) contacts, rated 4 A @ 250 VAC  

• Terminals: Push-in “Easy Connect” spring type (screwless)  

• Dimensions: 22.5 × 85.6 × 103.7 mm (Fits 35 mm DIN rail)  

• Protection Rating: Housing IP50, terminals IP20; withstands 4 kV impulse voltage  

• Operating Temp: –40 °C to +60 °C; pollution degree 3  

• Certifications: IEC/EN 61812-1, UL 508, CSA, CE, RoHS compliant