CF-TB-1AS3-155-A Toggle Switch Equivalent & Substitute Parts

Part Overview

The CF-TB-1AS3-155-A is a toggle switch manufactured by Nidec Components Corporation, classified as SPST (Single Pole Single Throw) panel mount with on-off functionality. This part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and new design applications where this component is specified.

Substiute Parts

CF-TB-1AS3-155-A

Nidec Components CorporationIn Stock: 941CF-TB-1AS3-155-A Datasheet

Current PartRFQ

631NH

APEM Inc.In Stock: 872631NH Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CF-TB-1AS3-155-A is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST
• Switch function: On-Off
• Current rating: 15A (AC) minimum
• Mounting type: Panel Mount
• Termination style: Screw Terminal
• Actuator type: Flatted
• Panel cutout dimensions: Circular, compatible with 12.30mm diameter
• Bushing thread: M12 compatible

Acceptable Variation Parameters:

• Voltage rating: Must meet or exceed 125V AC
• Actuator length: Minor variations acceptable within mechanical envelope constraints
• Operating temperature range: May differ if application requirements are met
• Electrical life: May differ based on application duty cycle
• RoHS compliance: ROHS3 compliance required

The substitute part 631NH from APEM Inc. meets all mandatory compatibility parameters while providing enhanced voltage rating and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The 631NH from APEM Inc. is the qualified substitute for the CF-TB-1AS3-155-A based on the following engineering criteria:

Functional Equivalence: Both parts share identical circuit configuration (SPST), switch function (On-Off), current rating (15A AC), mounting type (Panel Mount), actuator type (Flatted), and termination style (Screw Terminal).

Compliance Status: The 631NH maintains ROHS3 compliance, meeting regulatory requirements equivalent to the original part. The substitute is currently in active production status, ensuring long-term availability and supply chain stability.

Electrical Performance: The 631NH provides enhanced voltage rating (250V AC versus 125V AC), offering greater margin in applications operating at or near the original 125V specification.

Mechanical Compatibility: Panel cutout dimensions are compatible (12.20mm versus 12.30mm), and both use M12 bushing threads. The 1.50mm difference in actuator length (14.60mm versus 12.00mm) must be evaluated within the specific panel mounting envelope of the application.

Operational Considerations: The substitute operates across a wider low-temperature range (-20°C versus -10°C) but has a lower upper temperature limit (55°C versus 65°C). The electrical life rating of the 631NH (10,000 cycles) is lower than the original part (50,000 cycles) and should be assessed against application duty cycle requirements.

Frequently Asked Questions (FAQ)

Q: Can the 631NH directly replace the CF-TB-1AS3-155-A in all applications?

A: The 631NH is functionally equivalent for SPST on-off switching at 15A AC. However, verify that the 1.50mm increase in actuator length does not interfere with the panel mounting envelope. Additionally, confirm that the application's electrical life requirement does not exceed 10,000 cycles, as the substitute is rated for this cycle count compared to the original part's 50,000 cycles.

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

A: The primary differences are voltage rating (250V versus 125V), actuator length (14.60mm versus 12.00mm), bushing thread pitch (M12 x 0.75 versus M12 x 1), operating temperature upper limit (55°C versus 65°C), and electrical life (10,000 versus 50,000 cycles). All other functional parameters are identical.

Q: Is the higher voltage rating of the 631NH a concern?

A: No. A higher voltage rating provides additional safety margin and does not negatively impact performance in applications specified for 125V AC operation. The 631NH is suitable for use in circuits rated at or below 125V AC.

Q: What should be verified before implementing the 631NH as a substitute?

A: Verify panel cutout compatibility with the 12.20mm diameter specification, confirm that the 14.60mm actuator length fits within the mechanical envelope, assess whether the application duty cycle exceeds 10,000 electrical cycles, and validate that the operating temperature range (-20°C to 55°C) meets application requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the CF-TB-1AS3-155-A and 631NH are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing.