SX0794/63 Toggle Switch SPST Equivalent & Substitute Parts

Part Overview

The SX0794/63 is a panel-mount toggle switch with SPST (Single Pole Single Throw) configuration manufactured by Bulgin. This component is rated for 10A at 250V AC and 28V DC, featuring a standard round actuator with quick connect termination. The product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design implementations where this switch type is required.

Substiute Parts

SX0794/63

BulginIn Stock: 886SX0794/63 Datasheet

Current PartRFQ

C3900BA

BulginIn Stock: 2853C3900BA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SX0794/63 is determined by the following critical parameters:

• Circuit Configuration: Must remain SPST to maintain identical switching logic
• Switch Function: Must be On-Off operation
• Mounting Type: Must be panel mount to fit existing enclosure designs
• Termination Style: Must use Quick Connect - 0.250" (6.3mm) for direct connection compatibility
• Actuator Type: Must be standard round for mechanical fit
• Current and Voltage Ratings: Substitute must meet or exceed the original ratings (10A at 250V AC minimum)
• Panel Cutout Compatibility: Panel cutout dimensions must accommodate the existing mechanical opening
• Compliance: Must maintain ROHS3 compliance and REACH unaffected status

The C3900BA meets these substitution criteria while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The C3900BA is the qualified substitute for the obsolete SX0794/63. Both components are manufactured by Bulgin and maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

The C3900BA offers superior current handling capacity (20A AC versus 10A AC) and maintains compatible DC voltage performance (36V DC versus 28V DC). The substitute features identical SPST circuit configuration, On-Off switch function, panel mount design, and quick connect termination.

Panel cutout dimensions differ slightly (12.70mm versus 12.00mm), requiring verification that the existing 12.00mm opening can accommodate the 12.70mm diameter requirement, or that panel modification is feasible. The actuator length is shorter on the C3900BA (17.50mm versus 20.20mm), which may affect ergonomic considerations in applications where actuator reach is critical.

The C3900BA is currently in active production with substantial inventory availability, providing supply chain continuity for new designs and replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the C3900BA directly replace the SX0794/63 without any modifications?

A: The C3900BA is electrically and functionally compatible as a direct substitute. However, the panel cutout diameter increases from 12.00mm to 12.70mm. If the existing panel opening is precisely machined to 12.00mm, enlargement to 12.70mm may be required. The shorter actuator length (17.50mm versus 20.20mm) should be evaluated for user interface consistency.

Q: What are the key differences in electrical ratings?

A: The C3900BA provides higher AC current capacity (20A versus 10A) and slightly higher DC voltage rating (36V versus 28V). The original SX0794/63 is rated for 250V AC, while the C3900BA is rated for 125V AC. Applications requiring 250V AC operation must verify that 125V AC rating is acceptable for the intended use case.

Q: Are both components compliant with current regulations?

A: Yes. Both the SX0794/63 and C3900BA are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the impact of the panel cutout dimension difference?

A: The C3900BA requires a 12.70mm diameter circular opening compared to the original 12.00mm. Existing panels with precisely machined 12.00mm openings will require enlargement. This is a mechanical consideration only and does not affect electrical compatibility.

Q: Why is the SX0794/63 obsolete?

A: The SX0794/63 has been discontinued by Bulgin. The C3900BA represents the current production equivalent within the Bulgin toggle switch portfolio, offering improved specifications and ongoing supply availability.