KB15SKW01-28-EB Equivalent & Substitute Parts

Part Overview

The KB15SKW01-28-EB is an SPDT pushbutton switch manufactured by NKK Switches, designed for panel mount applications with front-facing illumination. This component features a square yellow actuator with incandescent yellow illumination at 28 VAC nominal voltage. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

KB15SKW01-28-EB

NKK SwitchesIn Stock: 1119KB15SKW01-28-EB Datasheet

Current PartRFQ

YB15SKW01-5D24-JD

NKK SwitchesIn Stock: 712YB15SKW01-5D24-JD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KB15SKW01-28-EB is determined by the following critical parameters:

Circuit and Function Compatibility: The substitute must maintain SPDT circuit configuration with On-Mom switch function to preserve electrical behavior in the host system.

Voltage and Current Ratings: The substitute must support minimum 125 VAC and 30 VDC ratings. The KB15SKW01-28-EB operates at 1A; substitutes with higher current ratings (3A) remain compatible as they represent increased capability within the same voltage envelope.

Mounting and Mechanical Interface: Panel mount, front-facing orientation is required. Panel cutout diameter is a critical mechanical constraint; the KB15SKW01-28-EB specifies 12.30mm, while substitutes may have larger cutouts (16.00mm) requiring panel modification.

Illumination Characteristics: The original part uses incandescent yellow illumination at 28 VAC. Substitutes with different illumination technologies (LED) and voltages (24 VDC) represent functional equivalents where the host system can accommodate the change.

Environmental and Lifecycle Parameters: Operating temperature range (-25°C ~ 50°C) and RoHS3 compliance must be maintained. Substitutes with enhanced mechanical life (1,000,000 cycles vs. 100,000 cycles) and electrical life (100,000 cycles vs. 50,000 cycles) provide improved reliability.

Parameter Comparison

Engineering Selection Recommendations

The YB15SKW01-5D24-JD is an active product substitute for the obsolete KB15SKW01-28-EB. Both components maintain ROHS3 compliance and equivalent voltage/current ratings within the 125 VAC and 30 VDC envelope.

Electrical Compatibility: The substitute's 3A current rating exceeds the original 1A specification, providing margin for system reliability. Voltage ratings remain identical, ensuring direct electrical substitution in AC/DC applications.

Mechanical Considerations: The panel cutout diameter increases from 12.30mm to 16.00mm. This difference requires panel modification or use of an adapter bushing. The termination style changes from solder lug to solder with quick connect options, necessitating wiring harness adjustment.

Illumination Trade-offs: The substitute transitions from incandescent yellow (28 VAC) to LED amber (24 VDC). This change requires modification of the illumination power supply circuit. LED technology provides extended operational life and reduced power consumption compared to incandescent sources.

Lifecycle Enhancement: The substitute offers 10-fold improvement in mechanical life (1,000,000 vs. 100,000 cycles) and doubled electrical life (100,000 vs. 50,000 cycles), supporting extended system service intervals.

Frequently Asked Questions (FAQ)

Q: Can YB15SKW01-5D24-JD directly replace KB15SKW01-28-EB without modifications?

A: Electrical substitution is direct. Mechanical and illumination modifications are required. The larger panel cutout (16.00mm vs. 12.30mm) requires panel rework. The illumination voltage change (28 VAC to 24 VDC) requires power supply circuit modification.

Q: What are the key compatibility criteria for this substitution?

A: SPDT circuit configuration, On-Mom function, 125 VAC / 30 VDC voltage ratings, panel mount orientation, and operating temperature range (-25°C ~ 50°C) are maintained. Illumination type, voltage, and panel cutout diameter differ and must be evaluated for system compatibility.

Q: Does the higher current rating (3A vs. 1A) affect system design?

A: No. The substitute's 3A rating is a superset of the original 1A specification. The system design remains valid; the substitute provides additional current capacity margin.

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

A: LED illumination requires 24 VDC instead of 28 VAC. The power supply circuit must be modified accordingly. LED technology offers longer operational life, lower power consumption, and different color characteristics (amber vs. yellow).

Q: Are there termination compatibility issues?

A: Yes. The original uses solder lug termination; the substitute offers solder and quick connect (0.110" / 2.8mm) options. Wiring harness connections must be adapted to the new termination style.

Q: Is RoHS compliance maintained with this substitution?

A: Yes. Both the KB15SKW01-28-EB and YB15SKW01-5D24-JD are ROHS3 compliant.