Honeywell 11SM423-H4 Basic Switch Explained for Industrial Control Systems
Introduction to the Honeywell 11SM423-H4 Basic Switch
The 11SM423-H4 basic switch is a compact snap action device built for consistent switching in control equipment, sensing assemblies, and industrial sub-systems. When engineers search for a Honeywell 11SM423-H4 basic switch, they are usually looking for a small-format electromechanical component that combines precise actuation with dependable long-term performance. This makes the Honeywell 11SM423-H4 microswitch a practical solution in applications where space is limited but switching accuracy still matters.
As part of the Honeywell SM Series, the 11SM423-H4 is configured as an SPDT basic switch with a round pin plunger actuator. It is a chassis mount design and uses solder plus quick-connect 0.110 in (2.8 mm) termination. That termination style can be useful in service-friendly assemblies where quick wiring access is preferred without giving up mechanical stability.
Technical Profile of the 11SM423-H4 Electromechanical Switch
The Honeywell 11SM423-H4 basic switch carries a 1 A AC/DC current rating, with voltage ratings up to 125 V AC and 30 V DC. Its maximum operating force is 99 gf, while release force is 28 gf. The operating position is 8.4 mm, pretravel is 0.5 mm, differential travel is 0.025 mm, and overtravel is 0.13 mm. Together, these values show that the Honeywell 11SM423-H4 pin plunger switch is designed for controlled, repeatable actuation in compact moving assemblies.
Another important point is durability. The switch offers a mechanical life of up to 10,000,000 cycles and operates in temperatures ranging from -55°C to 125°C. That combination supports applications in industrial control cabinets, transport equipment, instrumentation, and machine subassemblies exposed to broad thermal conditions.
Where a 11SM423-H4 SPDT Switch Fits Best
A Honeywell 11SM423-H4 SPDT switch can be used for position confirmation, motion-triggered control logic, interlock systems, and compact machine interface mechanisms. Because it uses a round plunger actuator, it is especially suited to applications where direct linear movement activates the switch. The SPDT format also allows flexible circuit design, which is often important in control engineering.
For more information about Honeywell, you can review broader electromechanical switch solutions and product families.
FAQ About the 11SM423-H4 Basic Switch
What type of switch is the Honeywell 11SM423-H4?
The Honeywell 11SM423-H4 is an SPDT snap action basic switch with a round pin plunger actuator. It is part of Honeywell’s SM Series.
How is the Honeywell 11SM423-H4 mounted?
This model is designed for chassis mounting, making it suitable for equipment frames and mechanically secured internal assemblies.
What termination style does the 11SM423-H4 basic switch use?
It uses solder and quick-connect 0.110 inch (2.8 mm) termination, which can support practical installation in serviceable control equipment.
What environments can the Honeywell 11SM423-H4 handle?
The switch operates from -55°C to 125°C and is built for a mechanical life of 10 million cycles, so it can support demanding industrial and equipment-level conditions.
Why choose a Honeywell 11SM423-H4 microswitch?
It is often chosen for its combination of compact size, SPDT flexibility, dependable snap action performance, and long mechanical service life in precision control designs.