Equivalent & Substitute Parts for Honeywell 13AT239-T2-L Toggle Switch

Part Overview

The Honeywell 13AT239-T2-L is a DPDT (Double Pole Double Throw) toggle switch rated for 5A at 250V AC and 30V DC. This panel-mount switch features a locking lever actuator with Mom-Off-Mom switching function and solder turret termination. The product is classified as obsolete, making identification of compatible substitute components essential for ongoing maintenance, repair, and new design applications where equivalent functionality is required.

Substiute Parts

13AT239-T2-L

Honeywell Sensing and Productivity SolutionsIn Stock: 86413AT239-T2-L Datasheet

Current PartRFQ

12TW8-7E

Honeywell Sensing and Productivity SolutionsIn Stock: 110312TW8-7E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 13AT239-T2-L toggle switch is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Circuit configuration (DPDT)
• Switch function (Mom-Off-Mom)
• Current rating (5A minimum)
• Mounting type (Panel Mount)
• Actuator type (Locking Lever)
• Termination style (Solder Turret)
• Panel cutout dimensions (Circular 12.40mm Dia)
• Bushing thread specification (15/32-32)

Voltage Consideration: The 13AT239-T2-L operates at 250V AC and 30V DC. Substitute parts must support the voltage requirements of the target application. A substitute rated for lower voltage (such as 125V AC) is acceptable only when the application voltage does not exceed the substitute's rating.

The Honeywell 12TW8-7E meets all mechanical and functional requirements and shares identical circuit configuration, current rating, mounting specifications, and termination style. The primary electrical difference is the AC voltage rating of 125V versus the original 250V AC specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: Honeywell 12TW8-7E

The 12TW8-7E is the qualified substitute for the obsolete 13AT239-T2-L based on the following engineering criteria:

1. Functional Equivalence: Both switches provide identical DPDT circuit configuration with Mom-Off-Mom switching function, supporting 5A current rating and panel-mount installation with locking lever actuation.

2. Mechanical Compatibility: Panel cutout dimensions (12.40mm circular), bushing thread (15/32-32), and termination style (solder turret) are identical, enabling direct mechanical replacement without panel modification.

3. Compliance Status: Both parts are RoHS Compliant with MSL Rating 1 (Unlimited), meeting current regulatory requirements. The substitute is an active product with ongoing manufacturer support, whereas the original is obsolete.

4. Voltage Rating Consideration: The substitute is rated for 125V AC versus the original 250V AC. Selection of the 12TW8-7E is appropriate for applications operating at or below 125V AC. Applications requiring 250V AC operation must retain the original part number or identify alternative sources.

5. Environmental Enhancement: The 12TW8-7E provides Environment Sealed ingress protection and specified operating temperature range (-65°C ~ 71°C), offering improved environmental performance compared to the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 12TW8-7E directly replace the 13AT239-T2-L in all applications?

A: Direct mechanical and functional replacement is possible. However, voltage rating must be verified. The 12TW8-7E is rated for 125V AC, while the original supports 250V AC. If the application operates above 125V AC, the substitute is not suitable. For applications at or below 125V AC, the 12TW8-7E provides equivalent performance.

Q: What is the significance of the actuator length difference (30.00mm vs. 29.46mm)?

A: The 0.54mm difference in actuator length is negligible for functional operation. Both actuators are locking lever type with similar engagement characteristics. This minor dimensional variance does not affect switch operation or panel mounting.

Q: Are there DC voltage considerations for the 12TW8-7E?

A: The substitute part specification does not include a DC voltage rating. The original 13AT239-T2-L is rated for 30V DC. If the application requires DC operation, the DC voltage rating of the 12TW8-7E must be confirmed with the manufacturer before substitution.

Q: Why is the 13AT239-T2-L classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The 12TW8-7E, classified as Active, represents the current production equivalent from Honeywell Sensing and Productivity Solutions.

Q: Does the Environment Sealed rating of the 12TW8-7E affect compatibility?

A: Environment Sealed ingress protection is an enhancement that does not negatively affect compatibility. Applications in sealed or protected environments benefit from this feature. Applications in standard environments are unaffected.

Q: What packaging differences exist between these parts?

A: The original 13AT239-T2-L is specified with "-" packaging notation. The 12TW8-7E is supplied in Bulk packaging. Both are suitable for component-level integration; packaging difference reflects current manufacturing and distribution practices.