Description
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.
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.
| 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
- 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.
- 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.
- 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
- 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.
- 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 Xinyeda International Trading Co., Ltd. offers
certified SR489-P1-LO-A20-E relays with
1-year warranty, pre-tested for zero-crossing accuracy. Visit
www.xydcontrol.com for technical drawings or custom SSR solutions.
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