Description

The ABB CT-ERS.21S Time Relay provides precise timing control for automation and industrial processes. With an adjustable ON-delay range and a wide operating voltage, it ensures flexibility and reliability in timing applications. A sealable transparent cover prevents unauthorized setting changes. For advanced control setups, explore our industrial automation and control solutions.

Key Specifications

• Model: ABB CT-ERS.21S

• Function: ON-delay (delay on make)

• Time Range: 0.05 s to 300 h (10 ranges)

• Control Supply: 24–240 V AC/DC

• Output: 2 c/o (SPDT) contacts, 250 V / 4 A

• Connection: Screw terminal, cage clamp

• Accessory: Transparent sealable cover

Highlights

• Wide timing range and flexible control

• Reliable ABB relay performance

• Easy parameter setting and wiring

• Secure adjustment with optional cover

Typical Uses

• Industrial timing and sequencing

• Process automation circuits

• Delay control in motor or lighting systems

Installation & Support

Pre-calibrated for panel mounting. ARC Technologies provides ABB timer setup, wiring, and maintenance support.