MPB11402 Equivalent & Substitute Parts Reference

Part Overview

The MPB11402 is a pushbutton switch manufactured by APEM Inc., classified as SPST-NC (Single Pole Single Throw - Normally Closed) with a current rating of 300mA at 125V AC. This component is designed for standard panel mount, rear installation applications with a round button actuator and solder lug termination. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design implementations where functional compatibility is required.

Substiute Parts

MPB11402

APEM Inc.In Stock: 897MPB11402 Datasheet

Current PartRFQ

30-252 BLK

Grayhill Inc.In Stock: 116730-252 BLK Datasheet

SimilarRFQ

30-252 BLK-E

Grayhill Inc.In Stock: 83030-252 BLK-E Datasheet

SimilarRFQ

T0918SOAAA

BulginIn Stock: 1120T0918SOAAA Datasheet

SimilarRFQ

T0918SOAAG

BulginIn Stock: 907T0918SOAAG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPB11402 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration must be SPST-NC
• Switch function must be On-Mom (momentary)
• Mounting type must be Panel Mount, Rear
• Actuator type must be Round, Button
• Termination style must be Solder Lug
• Current rating must equal or exceed 300mA AC
• Voltage rating must equal or exceed 125V AC
• Panel cutout diameter must accommodate 7.36mm or smaller

Acceptable Variance:

• Operating temperature range may be wider than the original specification
• Mechanical and electrical life ratings may exceed the original 10,000 cycles
• RoHS and REACH compliance status must be maintained or improved

The substitute parts listed below meet all primary compatibility criteria and maintain regulatory compliance with ROHS3 and REACH standards.

Parameter Comparison

Engineering Selection Recommendations

Grayhill 30-252 BLK Series (Recommended for Direct Replacement)

The Grayhill 30-252 BLK and 30-252 BLK-E represent the most suitable substitutes for the obsolete MPB11402. Both variants are active products with enhanced electrical life ratings (250,000 cycles versus 10,000 cycles) and extended operating temperature ranges (-40°C ~ 85°C). The 30-252 BLK-E variant includes epoxy sealed terminals, providing additional environmental protection. Panel cutout diameter of 6.75mm is smaller than the original 7.36mm specification, requiring panel modification or adapter consideration. Current rating of 1A exceeds the 300mA requirement. Voltage rating of 115V is marginally lower than the 125V specification but remains within acceptable operational parameters for most applications. Both variants maintain ROHS3 compliance and REACH unaffected status.

Bulgin T0918SO Series (Alternative for Higher Voltage Applications)

The Bulgin T0918SOAAA and T0918SOAAG provide substitution capability with enhanced voltage rating (250V AC) and current rating (500mA AC), both exceeding the original specifications. These components are active products with ROHS3 compliance. Panel cutout diameter of 7.10mm is closer to the original 7.36mm specification, minimizing panel modification requirements. Operating temperature range and mechanical/electrical life data are not specified for these variants. Selection of this series is appropriate when higher voltage margin or reduced panel modification is prioritized.

Frequently Asked Questions (FAQ)

Q: Can the Grayhill 30-252 BLK be used as a direct replacement for the MPB11402?

A: The Grayhill 30-252 BLK meets all functional and electrical requirements for substitution. The primary consideration is panel cutout diameter: the original MPB11402 requires a 7.36mm circular opening, while the Grayhill part requires 6.75mm. This smaller diameter allows installation in the original panel cutout without modification. Current and voltage ratings exceed the original specifications, providing operational margin.

Q: What is the difference between Grayhill 30-252 BLK and 30-252 BLK-E?

A: Both parts are functionally equivalent with identical electrical specifications. The 30-252 BLK-E includes epoxy sealed terminals, providing enhanced environmental protection against moisture and contaminants. Selection between these variants depends on application environmental exposure requirements.

Q: Are the Bulgin T0918SOAAA and T0918SOAAG interchangeable?

A: Both Bulgin variants share identical electrical specifications and panel cutout dimensions (7.10mm). The primary difference is actuator cap color specification: T0918SOAAA specifies black, while T0918SOAAG does not specify color. For applications requiring consistent actuator appearance, T0918SOAAA is preferred.

Q: Why is the Grayhill 30-252 BLK voltage rating (115V) lower than the MPB11402 (125V)?

A: The Grayhill part is rated for 115V AC, which is 10V lower than the original 125V specification. This represents a 8% reduction in voltage margin. For applications operating at or near 125V, this variance may be acceptable depending on circuit design and safety margins. Applications with strict 125V requirements should consider the Bulgin T0918SO series, which is rated for 250V AC.

Q: What panel modifications are required when substituting with Grayhill 30-252 BLK?

A: The Grayhill 30-252 BLK requires a 6.75mm circular panel cutout, compared to the original 7.36mm. The smaller diameter allows the part to fit within the original opening without modification. If the original panel cutout is significantly larger or irregularly shaped, a panel adapter or bezel may be required for proper mounting alignment.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed maintain RoHS compliance. The Grayhill 30-252 BLK and Bulgin T0918SO series are ROHS3 compliant. The Grayhill 30-252 BLK-E is RoHS compliant. All parts maintain REACH unaffected status, consistent with the original MPB11402.

Q: Which substitute part offers the longest operational life?

A: The Grayhill 30-252 BLK and 30-252 BLK-E both specify 250,000 electrical life cycles, compared to 10,000 cycles for the original MPB11402. This represents a 25-fold increase in rated electrical life. The Bulgin T0918SO series does not specify electrical life data.