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This SL1-A SPDT micro switch is engineered for high-reliability applications in industrial automation and HVAC controls. Certified under EN60947-5-1, it ensures compliance with safety-critical systems such as:
Elevator Safety Circuits: Replaces faulty limit switches causing "Safety Chain Interrupt" errors in elevator terminal限位 and speed governors.
HVAC Systems: Resolves airflow damper faults triggering "Sensor Fail" alerts in Carrier 59TP6 units.
Industrial Machinery: Compatible with Siemens SIMATIC S7-1500 PLCs requiring SPDT limit switches for conveyor safety interlocks.
Technical Specifications:
SPDT Contact Configuration: COM (common), NO (normally open), and NC (normally closed) terminals.
Actuator Type: Adjustable roller lever with 0.5mm actuation travel.
Mechanical Life: 1,000,000 cycles; Electrical Life: 500,000 cycles.
Certifications: EN60947-5-1, IP67, RoHS.
Cross-Compatibility:
Direct replacement for Omron Z-15GQ and Honeywell 4NT1-312 switches in safety-critical panels.
Carl Hahn
Reviewed in the United States on March 13, 2025
Replaced a faulty switch in our building’s HVAC damper system. The IP65 rating handles rooftop moisture perfectly, and the SPDT design works flawlessly with our controls. Cheaper than OEM but just as durable.
Steven Hendrickson
Reviewed in the United States on March 13, 2025
When our Yamatake Azbil SL1-A switch failed on a conveyor belt, this replacement kept the line running. The EN60947 certification gave us confidence, and it’s held up through months of 24/7 use. Exact match for the original!
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