NKK Switches S6B Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The NKK Switches S6B is a panel-mount toggle switch with DPDT (Double Pole Double Throw) configuration rated for 5A at 125V AC and 30V DC. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing maintenance, repair, and new design applications where equivalent functionality is required.

The S6B features a standard round actuator with 17.50mm length, solder lug termination, and a circular 12.50mm diameter panel cutout. Its electrical life rating of 25,000 cycles and operating temperature range of -10°C to 70°C define its performance envelope for industrial and commercial switching applications.

Substiute Parts

S6B

NKK SwitchesIn Stock: 773S6B Datasheet

Current PartRFQ

S6A

NKK SwitchesIn Stock: 1113S6A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S6B is determined by strict alignment with the following critical parameters:

• Circuit Configuration: Must be DPDT to maintain electrical functionality
• Switch Function: Must be On-On to preserve operational behavior
• Mounting Type: Must be Panel Mount for mechanical compatibility
• Actuator Type and Length: Must be Standard Round with 17.50mm length for panel interface compatibility
• Termination Style: Must be Solder Lug for connection compatibility
• Panel Cutout Dimensions: Must be Circular - 12.50mm Dia for panel mounting compatibility
• Bushing Thread: Must be M12 x 1 for mechanical fit
• Operating Temperature Range: Must encompass or match -10°C ~ 70°C
• Actuator Material: Must be Brass, Chrome Plated for durability and environmental resistance

The S6A qualifies as a direct substitute based on matching all mechanical and electrical interface parameters. The primary difference is an increased current rating of 20A (AC/DC) compared to the S6B's 5A rating, which represents an enhancement rather than a limitation for applications within the S6B's original design envelope.

Parameter Comparison

Engineering Selection Recommendations

The NKK Switches S6A is the qualified substitute for the obsolete S6B model. Both components share identical mechanical interfaces, electrical circuit configuration, and operational characteristics within the specified temperature and voltage ranges.

The S6A offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the S6A carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

The increased current rating of the S6A (20A versus 5A) does not present a compatibility concern for applications originally designed for the S6B, as the substitute maintains all other electrical and mechanical specifications. The higher current capacity provides operational margin for the same switching function and voltage class.

Both components maintain identical REACH status (REACH Unaffected) and share the same ECCN and HTSUS classifications, ensuring consistent regulatory treatment across supply chain and export considerations.

Frequently Asked Questions (FAQ)

Q: Can the S6A directly replace the S6B in existing applications?

A: Yes. The S6A maintains identical panel mounting dimensions, actuator geometry, termination style, and electrical circuit configuration. The mechanical and electrical interfaces are fully compatible. The increased current rating of the S6A does not create incompatibility with S6B applications.

Q: What is the significance of the current rating difference between S6B (5A) and S6A (20A)?

A: The current rating defines the maximum continuous current the switch can safely handle. The S6A's 20A rating is a performance enhancement that does not affect compatibility with circuits designed for 5A operation. Applications operating at or below 5A will function identically with either component.

Q: Are there any compliance differences between the S6B and S6A?

A: The S6A carries ROHS3 compliance certification, while the S6B status is not specified. Both components are REACH Unaffected. For new designs or applications subject to ROHS3 requirements, the S6A is the appropriate selection.

Q: What packaging options are available for the S6A?

A: The S6A is supplied in Bulk packaging. The S6B packaging specification is listed as a dash, indicating standard packaging. Bulk packaging is suitable for production assembly and component integration workflows.

Q: Are the panel cutout and bushing specifications identical?

A: Yes. Both the S6B and S6A require a circular 12.50mm diameter panel cutout and use M12 x 1 bushing thread specifications. Panel modifications are not required when substituting between these components.

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

A: Both the S6B and S6A are rated for 25,000 electrical cycles, defining the expected operational life under normal switching conditions within the specified temperature and voltage ranges.