MSM-19 SWITCH 3-128-297 Equivalent & Substitute Parts

Part Overview

The SCHURTER MSM-19 SWITCH (Part Number 3-128-297) is a pushbutton switch classified as obsolete. As this component has reached end-of-life status, identifying equivalent and substitute parts is necessary to maintain design continuity, support legacy system repairs, and ensure procurement availability for ongoing production or field service requirements.

Substiute Parts

3-128-297

SCHURTER Inc.In Stock: 8233-128-297 Datasheet

Current PartRFQ

3-145-830

SCHURTER Inc.In Stock: 9353-145-830 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MSM-19 SWITCH 3-128-297 is determined by functional equivalence within the SCHURTER product line. The primary substitute maintains identical functional classification as a pushbutton switch while offering active product status and improved procurement availability. Substitution is valid when the replacement part preserves the core switching function and mechanical form factor of the MSM-19 series.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER MSM-19 SWITCH 3-145-830 is the manufacturer-recommended substitute for the obsolete 3-128-297. Selection of the active-status replacement part (3-145-830) is appropriate for new designs, production continuity, and long-term field support applications. The substitute maintains functional equivalence within the MSM-19 pushbutton switch family and offers superior procurement status through active manufacturing and higher inventory availability.

Frequently Asked Questions (FAQ)

Q: What makes part 3-145-830 a valid substitute for 3-128-297? A: Both parts are SCHURTER MSM-19 pushbutton switches with identical functional classification. The substitute is the manufacturer-recommended replacement and maintains the same product type and series designation.

Q: Why is the original part 3-128-297 obsolete? A: The part has reached end-of-life status. SCHURTER has transitioned this design to the active part number 3-145-830 within the same MSM-19 series.

Q: Is inventory availability a factor in substitution? A: Yes. While 727 units of the original part remain in stock, the substitute part 3-145-830 offers higher inventory (911 units) and active product status, ensuring long-term procurement reliability.

Q: Can I use part 3-145-830 in existing designs that specify 3-128-297? A: Yes. As a manufacturer-recommended substitute within the same MSM-19 series, part 3-145-830 is functionally equivalent for pushbutton switch applications.

Q: What should I consider when transitioning from 3-128-297 to 3-145-830? A: Verify mechanical mounting compatibility and electrical performance requirements for your specific application. Both parts share the MSM-19 classification and are sourced from the same manufacturer.