KB15RKW01B-28-EB Equivalent & Substitute Parts

Part Overview

The KB15RKW01B-28-EB is a pushbutton switch manufactured by NKK Switches, featuring SPDT (Single Pole Double Throw) circuitry with illumination capability. This component is designed for panel-mount applications with front accessibility and incandescent yellow illumination at 28 VAC nominal voltage. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where similar performance characteristics are required.

Substiute Parts

KB15RKW01B-28-EB

NKK SwitchesIn Stock: 1027KB15RKW01B-28-EB Datasheet

Current PartRFQ

YB15RKW01-5D24-JD

NKK SwitchesIn Stock: 773YB15RKW01-5D24-JD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB15RKW01B-28-EB is determined by the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain SPDT configuration with On-Momentary switch function to preserve circuit logic and control behavior.

Electrical Ratings: AC voltage rating of 125 V and DC voltage rating of 30 V establish the minimum electrical performance envelope. Current rating of 1A defines the load-carrying capacity baseline.

Mechanical Interface: Panel mount, front-accessible configuration with rectangular button actuator ensures physical compatibility with existing panel layouts and operator interaction requirements.

Illumination Characteristics: The original part specifies incandescent yellow illumination at 28 VAC. Substitute parts may employ alternative illumination technologies (LED) with different voltage specifications, provided the illumination remains functionally integrated and visually compatible.

Environmental and Lifecycle Parameters: Operating temperature range of -25°C to 50°C, mechanical life of 100,000 cycles, and electrical life of 50,000 cycles establish baseline durability requirements.

Regulatory Compliance: ROHS3 compliance and EAR99 classification must be maintained.

The YB15RKW01-5D24-JD qualifies as a substitute based on these criteria, with enhancements in current rating, mechanical life, and illumination technology.

Parameter Comparison

Engineering Selection Recommendations

The YB15RKW01-5D24-JD is an active product from NKK Switches and represents a direct functional substitute for the obsolete KB15RKW01B-28-EB. Both components maintain ROHS3 compliance and EAR99 classification, ensuring regulatory consistency.

The substitute part provides enhanced electrical and mechanical performance characteristics, including increased current rating (3A versus 1A), extended mechanical life (1,000,000 versus 100,000 cycles), and doubled electrical life (100,000 versus 50,000 cycles). These improvements support extended operational reliability in demanding applications.

Key design considerations for implementation:

Panel Cutout Modification: The substitute requires a 16.00 mm diameter panel cutout compared to the original 12.30 mm specification. Panel redesign or enlargement of existing cutouts is necessary for mechanical fit.

Illumination Voltage Supply: The substitute operates on 24 VDC illumination voltage, replacing the original 28 VAC specification. Existing illumination power supplies must be evaluated and potentially modified to accommodate this change.

Termination Interface: The substitute employs solder and quick-connect termination (0.110" / 2.8mm) in place of solder lug termination. Wiring harness and PCB connection points require corresponding modification.

Active Product Status: The substitute's active product status ensures ongoing availability, technical support, and supply chain continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the YB15RKW01-5D24-JD be used as a direct drop-in replacement for the KB15RKW01B-28-EB?

A: No. While both parts share identical SPDT circuit configuration and On-Momentary function, three mechanical and electrical modifications are required: panel cutout enlargement from 12.30 mm to 16.00 mm diameter, illumination power supply change from 28 VAC to 24 VDC, and termination interface modification from solder lug to solder/quick-connect configuration.

Q: What are the critical parameters that define substitution compatibility?

A: Substitution compatibility is determined by circuit configuration (SPDT), switch function (On-Momentary), voltage ratings (125 V AC / 30 V DC minimum), current rating (1A minimum), mounting type (panel mount, front), and operating temperature range (-25°C to 50°C). Illumination technology and voltage may vary provided functional integration is maintained.

Q: Does the higher current rating of the substitute part affect circuit operation?

A: No. The 3A current rating of the substitute part establishes a higher load-carrying capacity ceiling. Existing circuits designed for 1A operation remain fully compatible, as the substitute will not draw additional current beyond circuit requirements.

Q: Are there any compliance or certification differences between the two parts?

A: Both parts maintain ROHS3 compliance and EAR99 classification. No compliance or certification differences exist that would restrict substitution from a regulatory perspective.

Q: What is the significance of the panel cutout diameter difference?

A: The panel cutout diameter directly determines mechanical fit within the panel assembly. The substitute's 16.00 mm requirement versus the original 12.30 mm necessitates physical panel modification. Existing panel tooling and cutout dimensions must be evaluated and enlarged accordingly.

Q: How does the illumination technology change from incandescent to LED affect system design?

A: LED illumination (24 VDC) replaces incandescent illumination (28 VAC), requiring modification of illumination power supply circuits. LED technology provides extended operational life and reduced power consumption compared to incandescent sources. Color appearance changes from yellow to amber, which may require visual assessment for application-specific requirements.