2025/10/27 440R-B23020, Sales records with pictures and video
Allen‑Bradley 440R‑B23020 Safety Relay — Compact, Certified Safety Control for Emergency Stops and Interlocks
Direct answer: The Allen‑Bradley 440R‑B23020 is a compact, Category 4 safety relay (EN 954‑1) designed for 24V DC safety control applications such as emergency stops, door interlocks and fault monitoring.
Overview
The 440R‑B23020 safety relay from Allen‑Bradley (Rockwell Automation) provides reliable, easy‑to‑monitor safety switching for machines and production lines. It supports two dedicated safety inputs and two relay outputs with LED status indicators, making it suitable for emergency stop circuits, safety door interlocks and continuous fault monitoring in industrial environments.
Key specifications
| Parameter | Value |
|---|---|
| Model | 440R‑B23020 |
| Supply voltage | 24 V DC |
| Safety inputs | 2 × safety inputs |
| Outputs | 2 × relay outputs (10 A rating) |
| Output current rating | 10 A per output |
| Response time | 20 ms |
| Operating temperature | ‑20 °C to 60 °C |
| Safety category / standard | Category 4 (EN 954‑1); conforms to IEC 61508 and EN 62061 |
| Indicators | LED status indicators for monitoring |
Note: Category and standard references are as provided by the manufacturer; for system safety validation follow the applicable machine safety standards and local regulations.
Quick comparison — 440R‑B23020 vs. generic safety relay
| Feature | 440R‑B23020 | Typical generic safety relay |
|---|---|---|
| Safety inputs | 2 dedicated safety inputs | Often 1–2 safety inputs |
| Outputs | 2 relay outputs, 10 A | Relay or solid‑state outputs, current varies |
| Certifications | IEC 61508, EN 62061; Category 4 (EN 954‑1) | Varies by model—check manufacturer data |
| Monitoring | LED status indicators for easy diagnostics | May require external indicators |
Typical application scenarios
- Emergency Stop Systems: Use with E‑stop buttons for safe machine shutdowns.
- Safety Interlocks: Integrate into door interlock circuits to prevent operation when guards are open.
- Fault Monitoring: Monitor safety circuits to detect faults and maintain safe operating conditions.
Core features & benefits
- Category 4 safety architecture (EN 954‑1) suitable for high integrity safety functions.
- Two safety inputs and two relay outputs simplify wiring for common E‑stop and guard circuits.
- LED status indicators speed troubleshooting and reduce downtime.
- Compact design for easy panel mounting and integration in existing control cabinets.
Product images & delivery process
Product photos:
Delivery process video:
FAQ
- What types of devices can the 440R‑B23020 interface with?
- It can interface with a variety of safety devices, including emergency stop buttons, safety light curtains and safety door interlocks.
- What certification standards does this relay meet?
- The 440R‑B23020 conforms to IEC 61508 and EN 62061 and is specified as Category 4 according to EN 954‑1 (manufacturer documentation).
- What is the supply voltage and output current rating?
- Supply voltage: 24 V DC. Output current rating: 10 A per output.
- How are faults and status indicated?
- The unit provides LED status indicators to simplify monitoring and troubleshooting of the safety circuit.
Trust signals & external citations
- Manufacturer: Allen‑Bradley (Rockwell Automation) — widely recognized global automation brand.
- Cited documentation: "Allen‑Bradley Safety Relays Data Sheet" — Rockwell Automation official documentation.
- Standards referenced: IEC 61508 and EN 62061 (functional safety standards for electrical/electronic/programmable systems), and EN 954‑1 Category 4 as provided by the manufacturer.
For authoritative product details and the latest datasheets, consult Rockwell Automation's official site:
"Allen‑Bradley Safety Relays Data Sheet" — Rockwell Automation official documentation.
