APEM Inc. 3631NF/2 Toggle Switch SPST Equivalent & Substitute Parts

Part Overview

The APEM Inc. 3631NF/2 is a panel-mounted toggle switch with SPST (Single Pole Single Throw) circuit configuration, rated for 6A AC at 125V and 12A DC at 28V. This component is classified as Active product status and is RoHS3 compliant. Alternative equivalent parts may be required due to inventory constraints, application-specific performance requirements, or design optimization needs where higher current ratings or enhanced environmental protection are beneficial.

Substiute Parts

3631NF/2

APEM Inc.In Stock: 8393631NF/2 Datasheet

Current PartRFQ

S1AWF

NKK SwitchesIn Stock: 1101S1AWF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The NKK Switches S1AWF qualifies as a functional equivalent based on the following substitution criteria:

Matching Parameters:

• Circuit configuration: SPST (Single Pole Single Throw)
• Switch function: On-Off operation
• Mounting type: Panel Mount
• Actuator type: Standard Round
• Actuator length: 17.50mm (identical)
• Termination style: Quick Connect - 0.250" (6.3mm)
• Voltage rating (AC): 125V
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Enhanced Specifications:

• Current rating: 15A AC / 20A DC (exceeds 3631NF/2 ratings)
• Electrical life: 25,000 cycles (exceeds 3631NF/2 rating)
• Ingress protection: IP67 (sealed against dust and water)

Mechanical Considerations:

• Panel cutout diameter: 12.50mm (vs. 12.20mm on main part)
• Bushing thread: M12 x 1 (vs. M12 x 0.75 on main part)
• Operating temperature: -30°C ~ 70°C (narrower range than main part)

Parameter Comparison

Engineering Selection Recommendations

Both the APEM Inc. 3631NF/2 and NKK Switches S1AWF are Active product status components with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on application requirements:

The 3631NF/2 is suitable for applications requiring the specified current ratings (6A AC / 12A DC) with extended low-temperature operation down to -40°C.

The S1AWF provides higher current capacity (15A AC / 20A DC), extended electrical life (25,000 cycles), and IP67 environmental protection, making it appropriate for applications requiring enhanced durability or moisture resistance. Panel cutout diameter and bushing thread specifications must be verified against mechanical design constraints, as these dimensions differ from the main part.

Frequently Asked Questions (FAQ)

Q: Can the S1AWF directly replace the 3631NF/2 in all applications?

A: Functional substitution is possible for applications where the current requirements do not exceed 6A AC or 12A DC. However, panel cutout diameter (12.50mm vs. 12.20mm) and bushing thread pitch (M12 x 1 vs. M12 x 0.75) must be verified against mechanical design specifications. Operating temperature range is narrower on the S1AWF (-30°C ~ 70°C vs. -40°C ~ 85°C).

Q: What are the key electrical compatibility factors?

A: Both parts share identical SPST circuit configuration, On-Off switch function, 125V AC voltage rating, Quick Connect 0.250" termination, and 17.50mm actuator length. The S1AWF exceeds the current and voltage ratings of the 3631NF/2, ensuring compatibility in applications within the 3631NF/2 specification envelope.

Q: Are there mechanical installation differences?

A: Yes. The panel cutout diameter differs by 0.30mm (12.20mm vs. 12.50mm), and the bushing thread specifications differ (M12 x 0.75 vs. M12 x 1). Panel mounting holes and threaded bushing compatibility must be confirmed before substitution.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant, MSL rating 1 (Unlimited), REACH unaffected, and classified under ECCN EAR99 and HTSUS 8536.50.9065.