S331F/C-UL Toggle Switch DPST 20A 125V Equivalent & Substitute Parts

Part Overview

The S331F/C-UL is an active NKK Switches toggle switch featuring DPST (Double Pole Single Throw) circuitry with a 20A AC/DC current rating and 125V AC / 30V DC voltage rating. This panel-mount component utilizes a standard round actuator with quick connect termination and is designed for on-off switching applications. The part is ROHS3 compliant and maintains an operating temperature range of -10°C to 70°C. Substitute parts are identified when electrical specifications, mechanical mounting characteristics, and circuit configuration remain identical across the product line.

Substiute Parts

S331F/C-UL

NKK SwitchesIn Stock: 857S331F/C-UL Datasheet

Current PartRFQ

S331F

NKK SwitchesIn Stock: 3507S331F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S331F/C-UL is determined by strict equivalence across the following critical parameters:

Circuit configuration must remain DPST with on-off switching function. Current and voltage ratings must match exactly: 20A (AC/DC), 125V AC, and 30V DC. Mechanical compatibility requires identical panel mount configuration with circular 12.50mm diameter cutout and M12 x 1 bushing thread. Actuator specifications must be identical: standard round type, 17.50mm length, and brass chrome-plated material. Termination must be quick connect 0.250" (6.3mm) style. Environmental and compliance parameters must align: operating temperature -10°C to 70°C, ROHS3 compliance, and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

Both the S331F/C-UL and S331F maintain active product status within the NKK Switches S300 series. Selection between these parts is based on availability and packaging requirements rather than functional or electrical differences. Both parts satisfy ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory adherence. The S331F variant shows higher inventory availability (3,494 pieces) compared to the S331F/C-UL (814 pieces), which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can S331F be used as a direct replacement for S331F/C-UL? A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including circuit configuration, current/voltage ratings, mounting dimensions, actuator specifications, and termination style.

Q: Are there any differences in compliance or certifications between these parts? A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status.

Q: What determines substitution eligibility for this product category? A: Substitution requires exact equivalence in circuit configuration (DPST), current rating (20A AC/DC), voltage ratings (125V AC / 30V DC), panel mount specifications (12.50mm circular cutout, M12 x 1 bushing), actuator type and dimensions (standard round, 17.50mm), termination style (quick connect 0.250"), and operating temperature range (-10°C to 70°C).

Q: Does packaging affect functional compatibility? A: No. Packaging format (bulk) does not affect electrical or mechanical performance. Both parts are functionally equivalent regardless of packaging configuration.

Q: What is the electrical life specification for these switches? A: Both parts are rated for 6,000 electrical cycles under specified operating conditions.