34ASP31B3M2QT Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The 34ASP31B3M2QT is an active production toggle switch manufactured by Grayhill Inc., classified as a Single Pole Double Throw (SPDT) panel mount switch with On-Off-On functionality. This component operates at 5A across both AC and DC circuits, with AC voltage rating of 125V and DC voltage rating of 28V. The switch features a standard round brass actuator with chrome plating, non-illuminated design, and PC pin termination suitable for panel cutout installation. Finding equivalent substitute parts becomes necessary when managing inventory constraints, addressing supply chain disruptions, or optimizing procurement across multiple suppliers while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

34ASP31B3M2QT

Grayhill Inc.In Stock: 76334ASP31B3M2QT Datasheet

Current PartRFQ

100SP3T1B1M2QEH

E-SwitchIn Stock: 993100SP3T1B1M2QEH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 34ASP31B3M2QT is determined by strict alignment across the following critical parameters:

Circuit and Functional Requirements: The substitute part must maintain SPDT circuit configuration with On-Off-On switch function to ensure identical electrical behavior in the application.

Electrical Performance: Current rating must equal or exceed 5A for both AC and DC operation. AC voltage rating must be at least 125V; DC voltage rating must be at least 28V to support the full operating envelope of the original component.

Mechanical Compatibility: Panel mount configuration with circular 6.35mm diameter cutout and 1/4-40 bushing thread ensures physical interchangeability. Standard round actuator type with PC pin termination maintains installation compatibility.

Environmental and Compliance Standards: Operating temperature range of -30°C to 85°C must be supported. RoHS3 compliance and REACH unaffected status are mandatory for regulatory equivalence. Electrical life of 40,000 cycles establishes the minimum durability requirement.

The identified substitute part 100SP3T1B1M2QEH from E-Switch meets all these criteria while maintaining active product status and full compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The 100SP3T1B1M2QEH from E-Switch qualifies as a functional equivalent to the 34ASP31B3M2QT based on matching circuit configuration, current rating, DC voltage rating, mechanical mounting parameters, operating temperature range, and regulatory compliance status. Both components maintain active production status with ROHS3 compliance and REACH unaffected certification.

Two parameters require engineering evaluation during selection:

AC Voltage Rating Differential: The E-Switch substitute carries a 120V AC rating compared to the 34ASP31B3M2QT's 125V AC rating. This 5V difference represents a 4% reduction in rated capacity. Selection of the substitute is appropriate only when the application circuit operates at or below 120V AC. Applications requiring the full 125V AC rating must retain the original Grayhill component.

Actuator Length Variation: The E-Switch actuator measures 10.41mm against the Grayhill actuator length of 12.19mm, a difference of 1.78mm. This dimensional variance may affect panel aesthetics and user interface feel but does not impact electrical function or mechanical mounting compatibility given identical panel cutout and bushing specifications.

Both components feature epoxy sealed terminals (E-Switch) or equivalent protection, supporting equivalent environmental performance in standard industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the 100SP3T1B1M2QEH replace the 34ASP31B3M2QT in all applications?

A: Substitution is valid for applications operating at 120V AC or below. Applications requiring 125V AC operation must use the original 34ASP31B3M2QT. All other electrical and mechanical parameters are equivalent.

Q: Does the 1.78mm difference in actuator length affect installation?

A: No. Both components use identical panel cutout dimensions (6.35mm circular) and 1/4-40 bushing thread. The actuator length difference affects only the visual profile and tactile feel of the switch lever, not mechanical mounting or electrical function.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 34ASP31B3M2QT and 100SP3T1B1M2QEH carry ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for applications subject to these standards.

Q: What is the electrical life expectancy for both switches?

A: Both components are rated for 40,000 electrical cycles, providing identical durability specifications across the substitution pair.

Q: Do both switches support the full -30°C to 85°C operating temperature range?

A: Yes. Both the Grayhill and E-Switch components maintain identical operating temperature specifications from -30°C to 85°C.

Q: Are the PC pin terminations compatible with the same PCB footprints?

A: Yes. Both components use PC pin termination style with matching panel mount configuration, supporting direct PCB footprint compatibility.

Q: What inventory status should I expect for each part?

A: The 34ASP31B3M2QT maintains 726 pieces in stock. The 100SP3T1B1M2QEH maintains 976 pieces in stock, providing alternative availability through E-Switch supply channels.