Description

ABB SR102A

1. Product Title

ABB SR102A – Dual‑Channel Safety Monitoring Relay

2. Product Overview

The SR102A is a DIN‑rail mount dual‑channel safety monitoring relay for safety‑circuit supervision in industrial machinery safety systems. It monitors safety contact inputs such as safety light curtains, emergency‑stop buttons and safety gate switches, providing two safety‑rated normally‑open output contacts for driving contactor coils. It supports both manual‑reset and auto‑reset operation modes plus external device monitoring (EDM) function to supervise downstream contactors. Compliant with global machinery safety standards, this unit prevents unsafe machine startup caused by welded contacts or faulty safety‑loop wiring.

3. Technical Specifications

• Brand: ABB
• Model: SR102A
• Warranty: One Year
• Condition: 100% New & Original
• Power Supply: 24 VAC/DC, 115 VAC, 230 VAC variants
• Safety Inputs: Dual‑channel N/C safety inputs
• Safety Outputs: 2 × Normally‑open safety relay outputs
• Function: EDM external device monitoring; Manual / Auto reset selectable
• Mounting: DIN‑rail
• Dimensions: 114 × 99 × 22.5 mm
• IP Rating: IP20 terminals, IP40 housing
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4. Application Scenarios

• Machine Tool Safety Circuits: Emergency‑stop and safety‑gate monitoring for metal‑cutting machine‑tool safety loops.
• Packaging Production Lines: Safety‑relay supervision for light‑curtain safety barriers on automated workcells.
• Material‑Handling Equipment: Safety‑circuit monitoring for conveyor and palletizing machinery safety systems.