MEC Switches 15551 Equivalent & Substitute Parts

Part Overview

The MEC Switches 15551 is a pushbutton switch with 4PST-2NO/2NC circuit configuration, rated for 250mA AC at 120V, designed for through-hole mounting applications. This component features a red plunger actuator, PC pin termination, and IP54 ingress protection suitable for dust-protected and water-resistant environments.

The 15551 is classified as obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this switch configuration and electrical rating.

Substiute Parts

15551

MEC SwitchesIn Stock: 110315551 Datasheet

Current PartRFQ

15451

MEC SwitchesIn Stock: 535715451 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MEC Switches 15551 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 4PST-2NO/2NC topology
• Current rating: 250mA AC minimum
• Voltage rating: 120V AC minimum
• Mounting type: Through hole
• Termination style: PC pin
• Ingress protection: IP54 or equivalent
• Series compatibility: Unimec™ family
• Compliance: ROHS3 and REACH status

The substitute part MEC Switches 15451 maintains identical electrical specifications, circuit topology, and mechanical interface requirements. Both components are manufactured by MEC Switches within the Unimec™ series and share equivalent functional performance for the specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

The MEC Switches 15451 is the direct substitute for the obsolete 15551 model. Both components maintain identical electrical performance specifications, circuit topology, and mechanical interface compatibility within the Unimec™ series.

The 15451 offers extended operating temperature range (-40°C to 160°C versus -40°C to 75°C) and significantly higher mechanical life rating (5,000,000 cycles versus 500,000 cycles), providing enhanced reliability margins for new designs or replacement applications.

Both parts maintain equivalent ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards. The 15451 is currently in active production status, ensuring long-term supply availability compared to the obsolete 15551.

Frequently Asked Questions (FAQ)

Q: Can the 15451 directly replace the 15551 in existing designs?

A: Yes. Both components share identical circuit configuration (4PST-2NO/2NC), current rating (250mA AC), voltage rating (120V), mounting type (through hole), termination style (PC pin), and ingress protection (IP54). Electrical and mechanical interfaces are equivalent.

Q: What are the differences between these parts?

A: The primary differences are product status and performance ratings. The 15451 is active production versus the 15551 obsolete status. The 15451 provides extended operating temperature range (-40°C to 160°C) and higher mechanical life (5,000,000 cycles). These represent performance enhancements rather than functional changes.

Q: Are there packaging differences?

A: The 15551 is packaged in standard format, while the 15451 is supplied in tube packaging. Both maintain identical component specifications and through-hole mounting interface.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the 15551 and 15451 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing.

Q: Which part should be selected for new designs?

A: The 15451 is the appropriate selection for new designs. It maintains full electrical and mechanical compatibility while offering extended performance ratings and active production status ensuring supply continuity.