SCHURTER 3-102-621 MSM Mechanical Metal Line Switch - Equivalent & Substitute Parts

Part Overview

The SCHURTER 3-102-621 is an anti-vandal illuminated pushbutton switch with SPDT circuit configuration, designed for panel-mount front installation. This component features a round flush button actuator with green LED illumination and operates at 24 VDC nominal illumination voltage with a 100mA DC current rating at 30V. 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

3-102-621

SCHURTER Inc.In Stock: 11413-102-621 Datasheet

Current PartRFQ

3-145-371

SCHURTER Inc.In Stock: 11873-145-371 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 3-102-621 is determined by equivalence across the following critical parameters:

• Circuit configuration (SPDT)
• Switch type classification (Anti-Vandal, Illuminated)
• Mounting methodology (Panel Mount, Front)
• Actuator geometry (Round, Button, Flush)
• Electrical ratings (100mA DC, 30V DC)
• Illumination specifications (LED, Green, 24 VDC nominal)
• Termination interface (Quick Connect - 0.110")
• Ingress protection level (IP40)
• Panel cutout dimensions (Circular - 16.10mm Dia)
• Operating temperature envelope (-25°C to 85°C)
• Regulatory compliance (ROHS3, REACH Unaffected)

The SCHURTER 3-145-371 qualifies as a manufacturer-recommended substitute based on functional equivalence within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 3-102-621 is designated as obsolete, necessitating transition to active production alternatives for new designs and long-term system support. The SCHURTER 3-145-371 is the manufacturer-recommended substitute, offering active product status and equivalent functional performance. Selection of the 3-145-371 ensures continued access to supply chain resources, manufacturer technical support, and compliance with current regulatory frameworks. Both components maintain ROHS3 compliance and REACH unaffected status, supporting environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Why is the 3-102-621 being phased out? A: The 3-102-621 is classified as obsolete by the manufacturer. The 3-145-371 represents the active production equivalent.

Q: Are the 3-102-621 and 3-145-371 mechanically interchangeable? A: Both components are MSM series pushbutton switches with equivalent mechanical mounting specifications, panel cutout dimensions, and actuator geometry, supporting direct mechanical substitution in panel-mount applications.

Q: What are the electrical compatibility requirements for substitution? A: Both parts maintain identical SPDT circuit configuration, 100mA DC current rating, and 30V DC voltage rating, ensuring electrical compatibility in existing circuit designs.

Q: Are there differences in illumination specifications? A: Both components feature LED illumination at 24 VDC nominal voltage, maintaining consistent illumination performance in applications requiring green indicator status.

Q: What is the impact on supply chain continuity? A: The 3-145-371 is active production status with current inventory availability, providing assured long-term supply chain access compared to the obsolete 3-102-621.

Q: Are regulatory certifications maintained with the substitute part? A: Both components maintain ROHS3 compliance and REACH unaffected status, supporting equivalent regulatory requirements.