NKK Switches S114 Toggle Switch DPST Equivalent & Substitute Parts

Part Overview

The NKK Switches S114 is a DPST (Double Pole Single Throw) toggle switch rated for 5A at 125V AC and 30V DC. This component features panel mount installation with a circular 12.50mm diameter cutout and M12 x 1 bushing thread. The S114 is classified as obsolete, making identification of equivalent substitute parts essential for ongoing maintenance, repair, and new design applications where this switch type is required.

Substiute Parts

S114

NKK SwitchesIn Stock: 1151S114 Datasheet

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S21A

NKK SwitchesIn Stock: 1602S21A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the S114 is determined by the following critical parameters that must remain compatible:

Circuit Configuration: DPST topology must be maintained for equivalent electrical function.

Mounting Interface: Panel mount installation with circular 12.50mm diameter cutout and M12 x 1 bushing thread ensures mechanical compatibility with existing panel designs.

Voltage Ratings: AC voltage rating of 125V and DC voltage rating of 30V establish the electrical operating envelope.

Termination Style: Solder lug termination must be preserved for circuit board integration.

Actuator Geometry: Standard round actuator with compatible length ensures user interface consistency.

Operating Temperature Range: -10°C ~ 70°C defines the thermal operating window.

The NKK Switches S21A meets all these substitution criteria while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The S21A serves as a direct substitute for the S114 based on mechanical and electrical compatibility. Both components share identical panel mount geometry, voltage ratings, and termination methodology. The S21A is currently in active production status, ensuring availability for replacement and new applications.

The S21A provides enhanced current handling capacity (15A AC / 20A DC versus 5A AC/DC on the S114) and extended electrical life (25,000 cycles versus 10,000 cycles). These improvements make the S21A suitable for applications requiring the S114's electrical and mechanical interface while offering superior performance margins.

Both components maintain ROHS3 compliance and identical operating temperature specifications, supporting regulatory and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the S21A directly replace the S114 in existing applications?

A: Yes. The S21A maintains identical panel cutout dimensions (12.50mm circular), bushing thread (M12 x 1), voltage ratings (125V AC / 30V DC), and termination style (solder lug). Mechanical and electrical interfaces are fully compatible.

Q: What are the key differences between the S114 and S21A?

A: The S21A offers higher current ratings (15A AC / 20A DC versus 5A), extended electrical life (25,000 cycles versus 10,000 cycles), and active product status. Actuator length differs by 0.50mm (17.50mm versus 18.00mm), which does not affect panel mount compatibility.

Q: Why is the S114 listed as obsolete?

A: The S114 has been discontinued by NKK Switches. The S21A represents the current production equivalent within the NKK Switches S-series toggle switch family.

Q: Are there packaging differences between these components?

A: The S114 is available in standard packaging, while the S21A is supplied in bulk packaging. Both maintain identical component specifications and performance characteristics.

Q: Do both components meet the same compliance standards?

A: Yes. Both the S114 and S21A are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.