Description
GE SR489-P1-LO-A20-E Solid State Relay
The SR489-P1-LO-A20-E is a high-reliability solid-state relay (SSR) from GE’s Allen-Bradley portfolio, designed for industrial switching applications in machinery, HVAC systems, and process control. This model features zero-crossing switching, DC input/AC output, and IP20-rated protection, ensuring smooth operation and extended lifespan in demanding environments. While specific suffix details are proprietary, this analysis aligns with GE’s SSR architecture and industrial standards.
1. Product Overview
The SR489-P1-LO-A20-E supports 24V DC input and 240V AC output with 40A continuous current capacity, ideal for controlling resistive or inductive loads like heaters, motors, and solenoids. Its zero-crossing technology minimizes EMI and mechanical stress, while LED status indicators simplify troubleshooting. Key features include screw-terminal connections, heat sink compatibility, and overload/overvoltage protection.
2. Technical Specifications
| Parameter | Specification |
|---|---|
| Input Voltage | 24V DC ±10% (10–30V DC) |
| Output Voltage | 240V AC (50/60 Hz) |
| Current Rating | 40A continuous; 120A peak (1 cycle) |
| Switching Type | Zero-crossing (resistive load) |
| Response Time | <10ms (turn-on/off) |
| Enclosure Rating | IP20 (NEMA 1) |
| Isolation | 4kVrms (input/output) |
| Control Mode | DC voltage trigger (3–30V DC logic compatible) |
| Mounting | 35mm DIN rail (TS-35) |
SR489-P1-LO-A20-E
3. Key Advantages
- Longevity: 10 million operations (vs. 1 million for electromechanical relays).
- Energy Efficiency: <1W standby power consumption.
- Noise Reduction: Zero arcing eliminates electromagnetic interference (EMI).
Case Study: A European plastics factory reduced downtime by 30% using SR489-P1-LO-A20-E on extrusion machine heaters, achieving precise temperature control.
4. Applications & Use Cases
- Manufacturing: Controls heating elements in injection molding machines.
- HVAC: Modulates blower motors in commercial boilers.
- Water Treatment: Activates solenoid valves in chemical dosing systems.
Example: A U.S. food processing plant replaced 50 electromechanical relays with SR489-P1-LO-A20-E, cutting maintenance costs by $20,000 annually.
5. Competitor Comparison
- Higher Current Capacity: 40A vs. 30A in similarly sized alternatives.
- Integrated Protection: Built-in transient voltage suppression (TVS) diode reduces external component costs.
- Space Efficiency: 22.5mm width saves 30% panel space vs. legacy models.
SR489-P1-LO-A20-E
6. Selection Recommendations
- Load Type: Choose zero-crossing SSRs (SR489 series) for resistive loads; select random-phase SSRs for inductive loads.
- Voltage Match: Ensure output voltage matches system requirements (240V AC vs. 480V AC alternatives).
- Cooling: Use heat sink for continuous 40A operation in ambient temperatures >30°C.
7. Installation & Maintenance Notes
- Wiring: Use 10AWG wires for 40A loads; torque terminals to 0.5 N·m.
- Heat Management: Maintain 10mm clearance around the SSR for airflow.
- Testing: Verify input voltage before energizing; use a multimeter to check output continuity.
Shanxi Runsheng Import and Export Co., LTD. Our main products: FOXBORO, EMERSON, TRICONEX, XYCOM, BENTLY, ROCKWELL, ABB, GE, Allen-Bradley, YOKOGAWA, HONEYWELL, RELIANCE, SCHNEIDER, MODICON, Westin ghouse, WOODWARD, Motorola, Rexroth, SEW, Denkon. And other major brands of DCS, PLC, robot, large servo four system spare parts. Other automation spare parts sales and technical support. Please visit our website www.rsmodules.com or contact us at +86 15383514022 and we will be happy to serve you.
