ST26KMZQ Toggle Switch SP3T Equivalent & Substitute Parts

Part Overview

The ST26KMZQ is a panel-mount toggle switch manufactured by APEM Inc., configured as a single-pole triple-throw (SP3T) switch rated for 6A at 125V AC and 7A at 30V DC. This switch features a standard round actuator with solder lug termination and operates across a temperature range of -30°C to 85°C. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

ST26KMZQ

APEM Inc.In Stock: 655ST26KMZQ Datasheet

Current PartRFQ

100DP6T1B1M1QEH

E-SwitchIn Stock: 1891100DP6T1B1M1QEH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST26KMZQ is determined by strict alignment across the following critical parameters:

Circuit and Function Requirements:

• SP3T configuration with On-On-On switching function
• Solder lug termination for direct connection compatibility

Electrical Performance Boundaries:

• AC current rating must be equal to or greater than 6A
• DC current rating must be equal to or greater than 7A
• AC voltage rating must be equal to or greater than 125V
• DC voltage rating must be equal to or greater than 30V

Mechanical and Installation Compatibility:

• Panel mount configuration
• Standard round actuator with 10.41mm length
• Circular panel cutout of 6.35mm diameter
• 1/4-40 bushing thread specification

Environmental and Regulatory Compliance:

• Operating temperature range of -30°C to 85°C or broader
• ROHS3 compliance
• 40,000 cycle electrical life minimum

The substitute part 100DP6T1B1M1QEH from E-Switch meets these criteria with equivalent mechanical dimensions, matching circuit configuration, and compliant regulatory status.

Parameter Comparison

Engineering Selection Recommendations

The 100DP6T1B1M1QEH from E-Switch provides functional equivalence for applications currently using the obsolete ST26KMZQ. Both components share identical mechanical interfaces, circuit configuration, and environmental operating parameters. The substitute maintains ROHS3 compliance and equivalent electrical life specifications.

The 100DP6T1B1M1QEH carries active product status, ensuring ongoing availability and supply chain continuity. This status distinction is significant for long-term system support and future procurement planning.

Electrical parameter differences exist: the substitute is rated at 5A AC/DC versus the main part's 6A AC and 7A DC ratings, and 120V AC versus 125V AC. These differences represent lower maximum ratings on the substitute. Applications operating at or near the maximum electrical specifications of the ST26KMZQ require evaluation to confirm the substitute's ratings remain adequate for the intended duty cycle.

Frequently Asked Questions (FAQ)

Q: Can the 100DP6T1B1M1QEH directly replace the ST26KMZQ in existing assemblies?

A: Mechanical and electrical interface compatibility is confirmed. The substitute shares identical panel cutout dimensions, bushing thread specification, actuator geometry, and termination style. Direct physical installation is feasible. Electrical load verification is required to confirm the substitute's 5A AC/DC and 120V AC ratings are sufficient for the application.

Q: What are the key differences between these two switches?

A: The primary differences are product status (obsolete versus active) and electrical ratings. The ST26KMZQ is rated 6A AC at 125V and 7A DC at 30V. The 100DP6T1B1M1QEH is rated 5A AC/DC at 120V AC and 28V DC. All mechanical parameters, circuit configuration, and environmental specifications are identical.

Q: Are there packaging differences between these parts?

A: The ST26KMZQ is specified with dash packaging notation, while the 100DP6T1B1M1QEH is supplied in bulk packaging. This distinction affects procurement and handling procedures but does not impact functional performance or installation compatibility.

Q: Which actuator material is used in each switch?

A: The ST26KMZQ features brass with nickel plating. The 100DP6T1B1M1QEH uses brass with chrome plating. Both materials provide corrosion resistance and durability appropriate for panel-mount toggle switch applications.

Q: Do both switches require a jumper for triple-throw operation?

A: Yes. Both the ST26KMZQ and 100DP6T1B1M1QEH require a jumper to achieve triple-throw functionality, as specified in their feature sets.

Q: Are both switches compliant with current regulatory requirements?

A: Both switches are ROHS3 compliant and REACH unaffected. Regulatory compliance is equivalent between the two components.