STE115A10-Z Toggle Switch SPST 15A 125V Equivalent & Substitute Parts

Part Overview

The STE115A10-Z is a panel-mount toggle switch manufactured by Nidec Components Corporation, configured as a single-pole single-throw (SPST) switch rated for 15A at 125V AC. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where legacy compatibility is not required.

Substiute Parts

STE115A10-Z

Nidec Components CorporationIn Stock: 1216STE115A10-Z Datasheet

Current PartRFQ

631NH

APEM Inc.In Stock: 872631NH Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STE115A10-Z is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST
• Current rating: 15A AC minimum
• Voltage rating: 125V AC minimum
• Mounting type: Panel Mount
• Termination style: Screw Terminal
• Panel cutout dimensions: Circular aperture compatible with 12.50mm diameter
• Bushing thread: M12 compatibility

The 631NH from APEM Inc. qualifies as a direct substitute based on matching circuit configuration (SPST), current rating (15A AC), mounting type (panel mount), termination style (screw terminal), and panel cutout geometry (circular 12.20mm diameter, compatible with M12 bushing). The 631NH exceeds the voltage requirement at 250V AC, providing margin above the 125V AC specification of the original part.

Parameter Comparison

Engineering Selection Recommendations

The 631NH represents a functionally equivalent substitute for the STE115A10-Z based on matching electrical specifications and mechanical interface requirements. Both components are ROHS3 compliant and rated for 15A AC operation at screw terminal connections in panel-mount configurations.

The 631NH is currently in active production status, whereas the STE115A10-Z is obsolete. Selection of the 631NH provides access to an actively manufactured component with established supply chain availability.

Differences in electrical life (50,000 cycles for STE115A10-Z versus 10,000 cycles for 631NH) and operating temperature range (-15°C to 70°C versus -20°C to 55°C) should be evaluated against specific application duty cycles and environmental conditions. The 631NH's higher voltage rating (250V AC) provides operational margin above the 125V AC requirement.

Panel cutout dimensions differ slightly (12.50mm versus 12.20mm), and bushing thread specifications vary (M12 x 1 versus M12 x 0.75). These mechanical differences require verification against existing panel mounting hardware and installation procedures.

Frequently Asked Questions (FAQ)

Q: Can the 631NH directly replace the STE115A10-Z without panel modification?

A: The 631NH has a smaller panel cutout diameter (12.20mm versus 12.50mm) and different bushing thread pitch (M12 x 0.75 versus M12 x 1). Existing panel apertures sized for the STE115A10-Z may require modification or use of adapter hardware. Bushing thread compatibility must be verified with mounting hardware specifications.

Q: What is the significance of the voltage rating difference?

A: The 631NH is rated for 250V AC, exceeding the STE115A10-Z specification of 125V AC. This higher rating provides operational margin and does not create incompatibility when used in 125V AC circuits. The component remains suitable for the original application voltage.

Q: How do the electrical life ratings affect component selection?

A: The STE115A10-Z is rated for 50,000 electrical cycles, while the 631NH is rated for 10,000 cycles. Applications requiring frequent switching operations should evaluate whether the 631NH's lower cycle rating meets duty cycle requirements.

Q: Are both components RoHS compliant?

A: Both the STE115A10-Z and 631NH are ROHS3 compliant, meeting environmental and hazardous substance restrictions for electronic components.

Q: What are the actuator length differences?

A: The STE115A10-Z has a 12.00mm actuator length, while the 631NH has a 14.60mm actuator length. This difference may affect panel aesthetics and operator feel but does not impact electrical functionality.