MPL034 Equivalent & Substitute Parts

Part Overview

The Bulgin MPL034 is a pushbutton switch with SPST (Single Pole Single Throw) circuit configuration, rated for 2A at 50V AC/DC. This anti-vandal panel mount switch features a rear-mounted design with a circular 18.90mm panel cutout and solder lug termination. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

MPL034

BulginIn Stock: 1161MPL034 Datasheet

Current PartRFQ

1241.6821.1110000

SCHURTER Inc.In Stock: 12751241.6821.1110000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPL034 is evaluated based on the following critical parameters that define functional equivalence:

Circuit and Function Compatibility: The substitute must maintain SPST circuit configuration with Off-On switching function to preserve electrical behavior in the application.

Electrical Ratings: The substitute must meet or exceed the voltage and current requirements. The MPL034 operates at 2A, 50V AC/DC. A substitute with higher ratings (12A, 250V AC/30V DC) provides margin and remains compatible with applications designed for the original part's specifications.

Mechanical Interface: Panel mount configuration and actuator type (round button) must be compatible. The MPL034 uses rear mounting with an 18.90mm circular cutout. The substitute uses front mounting with a 19.10mm circular cutout, representing a minor dimensional variation within typical panel integration tolerances.

Anti-Vandal Classification: Both parts are classified as anti-vandal type, maintaining the mechanical robustness requirement.

Termination and Compliance: The MPL034 uses solder lug termination; the substitute uses quick connect 0.187" termination. Both are standard industrial connection methods. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 1241.6821.1110000 is identified as a functional substitute for the obsolete Bulgin MPL034 based on the following engineering criteria:

Product Status and Availability: The MPL034 is obsolete, while the SCHURTER part is active and currently in production. This ensures long-term availability and supply chain continuity.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for electronic component procurement.

Electrical Compatibility: The substitute's higher current rating (12A versus 2A) and voltage rating (250V AC versus 50V AC) provide operational margin for the original application. The DC voltage rating of the substitute (30V) exceeds the MPL034's 50V DC requirement in AC applications but is lower in pure DC scenarios; however, the AC rating of 250V provides sufficient headroom for typical industrial control applications.

Mechanical Integration: The 0.2mm increase in panel cutout diameter (19.10mm versus 18.90mm) is within standard manufacturing tolerances and does not preclude panel integration. The transition from rear to front mounting requires panel design verification but does not affect electrical function.

Durability Enhancement: The substitute offers significantly higher mechanical life (100,000 cycles versus 8,000 cycles), providing extended service life in high-cycle applications.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 1241.6821.1110000 directly replace the Bulgin MPL034 in existing applications?

A: Electrical substitution is valid. The SCHURTER part maintains SPST circuit configuration and Off-On function with equal or superior electrical ratings. Physical integration requires verification of panel cutout dimensions (0.2mm difference) and mounting orientation (rear versus front). Termination style differs (solder lug versus quick connect), requiring wiring harness adaptation.

Q: What are the key differences in electrical ratings between these parts?

A: The MPL034 is rated 2A at 50V AC/DC. The SCHURTER substitute is rated 12A at 250V AC and 30V DC. For applications operating within the original 2A, 50V specification, the substitute provides operational margin. Applications requiring DC operation above 30V require alternative evaluation.

Q: Does the substitute offer improved durability?

A: Yes. The SCHURTER part specifies 100,000 mechanical cycles compared to 8,000 cycles for the MPL034, representing a 12.5-fold increase in rated mechanical life. Electrical life is rated at 50,000 cycles versus 8,000 cycles.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant and REACH unaffected. The SCHURTER substitute additionally provides IP64 ingress protection (dust tight, water resistant), which is not specified for the MPL034.

Q: What termination considerations apply to substitution?

A: The MPL034 uses solder lug termination; the SCHURTER part uses quick connect 0.187" (4.7mm) termination. Both are standard industrial connection methods. Wiring harness modification is required for substitution.

Q: How do operating temperature ranges compare?

A: The MPL034 operates from -20°C to 70°C. The SCHURTER substitute operates from -20°C to 85°C, providing 15°C additional high-temperature margin.