SCHURTER 3-102-639 MSM Mechanical Metal Line Switch - Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-102-639 is an anti-vandal illuminated pushbutton switch with SPDT circuit configuration, designed for panel-mount front installation. This component features a ceramic actuator with LED green illumination and is rated for 10A AC at 250V. The part is currently 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

3-102-639

SCHURTER Inc.In Stock: 11453-102-639 Datasheet

Current PartRFQ

3-145-382

SCHURTER Inc.In Stock: 11353-145-382 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 3-102-639 is determined by the following critical parameters:

• Circuit Configuration: SPDT switching capability
• Current and Voltage Ratings: 10A AC at 250V minimum
• Mounting Interface: Panel mount, front installation with 16.10mm circular cutout
• Termination Compatibility: Quick Connect 0.110" (2.8mm) terminals
• Illumination Requirements: LED illumination at 24 VDC nominal
• Environmental Protection: IP40 ingress protection rating
• Operating Temperature Range: -25°C to 85°C capability
• Mechanical Durability: 1,500,000 cycle mechanical life specification

The SCHURTER 3-145-382 qualifies as a manufacturer-recommended substitute based on equivalent functional classification within the MSM mechanical metal line switch product family.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 3-145-382 is designated as the manufacturer-recommended substitute for the obsolete 3-102-639. Selection of this substitute is supported by:

• Active Product Status: The 3-145-382 maintains active production status, ensuring long-term availability and supply chain continuity
• Manufacturer Designation: Direct recommendation from SCHURTER Inc. establishes engineering equivalence within the MSM product line
• Compliance Alignment: Both components maintain equivalent regulatory compliance posture for industrial switching applications

For applications currently utilizing the 3-102-639, transition to the 3-145-382 is the manufacturer-supported path forward.

Frequently Asked Questions (FAQ)

Q: Why is the 3-102-639 classified as obsolete? A: The 3-102-639 has reached end-of-life status within SCHURTER's product portfolio. The 3-145-382 represents the active equivalent within the MSM mechanical metal line switch family.

Q: What are the critical parameters for substitution compatibility? A: Substitution requires equivalence in circuit configuration (SPDT), current/voltage ratings (10A AC, 250V), mounting interface (panel mount with 16.10mm cutout), termination style (Quick Connect 0.110"), and illumination specification (LED, 24 VDC).

Q: Can the 3-145-382 be used as a direct replacement in existing installations? A: The 3-145-382 is the manufacturer-recommended substitute. Verification of mechanical fit within the panel cutout and electrical termination compatibility with existing wiring harnesses is required during integration.

Q: Are there inventory considerations for the 3-102-639? A: Current inventory of 1121 pieces is available. However, as an obsolete component, future availability is not guaranteed. Transition planning to the 3-145-382 is recommended for new designs and long-term system support.

Q: What compliance certifications apply to both components? A: Both the 3-102-639 and 3-145-382 maintain ROHS3 compliance and REACH unaffected status, meeting current industrial regulatory requirements.