Key Specifications
General
Product: Safety relay, SSR42 series
Manufacturer: ABB
Part Number: 2TLA010053R0400
Supply Voltage: 24 V DC
Mounting: DIN‑rail
Terminal Type: Screw terminals
Protection Rating: IP20
RoHS Compliant: Yes
Inputs / Control
Control Supply: 24 V DC
Reset Mode: Manual or automatic selectable
Outputs
Contact Configuration: 2 NO safety outputs + 2 delayed NO outputs
OFF‑Delay Time: ~1.5 seconds
Rated Switching Current: 3 A (AC‑15 / DC‑13)
Rated Contact Voltage: up to 250 V AC
Mechanical
Width: ~22.5 mm
Height: ~120 mm
Depth: ~120 mm
Weight: ~0.207 kg
Environmental
Operating Temperature: ‑10 °C to +55 °C
Safety & Standards
For machine safety monitoring applications
Meets relevant safety relay standards (e.g., ISO 13849; supports SIL depending on configuration)
The ABB Sentry SSR42 24VDC (2TLA010053R0400) is a safety relay designed for use in industrial automation and machine safety systems. It monitors safety devices (such as emergency stops, safety gates, light curtains, and other safety contacts) and provides reliable safety outputs with selectable manual or automatic reset. It is intended for DIN‑rail mounting in control panels and conforms to safety performance standards.