KB26SKW01-12-CB Equivalent & Substitute Parts

Part Overview

The KB26SKW01-12-CB is a DPDT pushbutton switch manufactured by NKK Switches, designed for panel-mount applications with incandescent red illumination at 12 VAC. This component features a 1A current rating at 125V AC and is classified as obsolete. Due to its obsolete status and limited remaining inventory, identifying functionally equivalent substitute parts is necessary for ongoing system maintenance and new design implementations.

Substiute Parts

KB26SKW01-12-CB

NKK SwitchesIn Stock: 878KB26SKW01-12-CB Datasheet

Current PartRFQ

YB26SKW01-5C12-JC

NKK SwitchesIn Stock: 1070YB26SKW01-5C12-JC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KB26SKW01-12-CB is evaluated based on the following critical parameters that must align for functional equivalence:

Core Electrical Parameters:

• Circuit configuration (DPDT)
• Switch function (On-On)
• Voltage ratings (125V AC / 30V DC minimum)
• Current rating (minimum 1A AC/DC)

Mechanical & Interface Parameters:

• Mounting type (Panel Mount, Front)
• Panel cutout dimensions (circular, compatible with 12.30mm or adaptable)
• Termination style (solder-compatible connections)
• Actuator type (pushbutton)

Illumination Parameters:

• Red illumination color
• Voltage compatibility (12V nominal)

The YB26SKW01-5C12-JC meets these substitution criteria while offering enhanced performance characteristics in mechanical and electrical life ratings.

Parameter Comparison

Engineering Selection Recommendations

The YB26SKW01-5C12-JC is a qualified substitute for the KB26SKW01-12-CB based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical voltage ratings (125V AC / 30V DC) and DPDT On-On circuit configuration. The YB26SKW01-5C12-JC provides a higher current rating (3A versus 1A), which ensures compatibility with applications designed for the original part while offering additional capacity margin.

Mechanical Compatibility: Both parts feature identical mounting type (Panel Mount, Front) and compatible actuator design (Square, Button). The panel cutout diameter increases from 12.30mm to 16.00mm, requiring panel modification or adapter consideration for direct replacement in existing installations.

Product Status & Compliance: The KB26SKW01-12-CB is obsolete with limited inventory availability. The YB26SKW01-5C12-JC is active production status, ensuring long-term supply chain reliability. Both parts maintain ROHS3 compliance or equivalent environmental standards.

Performance Enhancement: The substitute part offers doubled mechanical life (200,000 versus 100,000 cycles) and doubled electrical life (100,000 versus 50,000 cycles), providing extended component reliability.

Illumination Consideration: The substitute transitions from incandescent to LED illumination with a voltage change from 12 VAC to 12 VDC. This requires verification of the illumination circuit power supply compatibility in the target application.

Frequently Asked Questions (FAQ)

Q: Can the YB26SKW01-5C12-JC directly replace the KB26SKW01-12-CB without modifications?

A: Electrical and functional replacement is direct. However, the panel cutout diameter increases from 12.30mm to 16.00mm, requiring either panel modification or mechanical adapter. Additionally, the illumination voltage changes from 12 VAC to 12 VDC, necessitating verification of the power supply circuit.

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

A: The primary differences are: current rating (1A to 3A), illumination technology (incandescent to LED), illumination voltage (12 VAC to 12 VDC), panel cutout size (12.30mm to 16.00mm), mechanical life (100,000 to 200,000 cycles), and electrical life (50,000 to 100,000 cycles). All core electrical parameters remain compatible.

Q: Is the higher current rating of the substitute part a concern?

A: No. The 3A rating of the YB26SKW01-5C12-JC is backward compatible with applications designed for 1A. The higher rating provides additional safety margin and does not negatively impact circuit operation.

Q: What is the impact of changing from incandescent to LED illumination?

A: LED illumination offers longer operational life and lower power consumption compared to incandescent. The voltage requirement changes from 12 VAC to 12 VDC, requiring confirmation that the illumination circuit power supply can provide 12 VDC instead of 12 VAC.

Q: Are there any compliance or certification concerns with substitution?

A: Both parts maintain equivalent environmental compliance. The KB26SKW01-12-CB is ROHS3 compliant. Verification of RoHS status for the YB26SKW01-5C12-JC is recommended for applications with specific regulatory requirements.

Q: What termination style differences exist?

A: The KB26SKW01-12-CB uses Solder Lug termination. The YB26SKW01-5C12-JC offers both Solder and Quick Connect (0.110" / 2.8mm) options, providing greater installation flexibility.