A02505 Configurable Contact Block DPST-NO/NC 16A 250VAC

Part Overview

The A02505 is a configurable contact block manufactured by APEM Inc., designed for use with A02 series switch bodies. This component provides DPST-NO/NC (Double Pole Single Throw - Normally Open/Normally Closed) switching capability rated at 16A @ 250VAC. The A02505 is classified as obsolete, making identification of suitable substitute components necessary for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

A02505

APEM Inc.In Stock: 675A02505 Datasheet

Current PartRFQ

LB-T60

IDECIn Stock: 1033LB-T60 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A02505 requires evaluation of the following critical parameters:

• Circuit Configuration: The A02505 provides DPST-NO/NC functionality. Substitute components must deliver equivalent switching pole and throw configurations.
• Contact Rating: The 16A @ 250VAC rating establishes the electrical load capacity. Substitute parts must meet or exceed this specification.
• Termination Style: The screw terminal connection method must be compatible with existing switch body interfaces.
• Compliance Standards: RoHS3 and REACH compliance status must be maintained for regulatory continuity.

The LB-T60 from IDEC is identified as a substitute component. However, critical parameter differences exist that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The LB-T60 maintains ROHS3 and REACH compliance alignment with the A02505. However, significant electrical and mechanical parameter differences exist:

• Contact Rating Reduction: The LB-T60 is rated at 5A @ 125VAC/30VDC, which is substantially lower than the A02505's 16A @ 250VAC specification. This component is suitable only for applications with reduced current and voltage requirements.
• Circuit Configuration Difference: The LB-T60 provides DPDT (Double Pole Double Throw) configuration versus the A02505's DPST-NO/NC. Circuit topology differences may require design modification.
• Termination Incompatibility: The LB-T60 uses solder and quick connect terminals, differing from the A02505's screw terminal interface. Physical integration with existing switch bodies requires verification.

Selection of the LB-T60 is appropriate only when application requirements align with its reduced electrical ratings and alternative termination method.

Frequently Asked Questions (FAQ)

Q: Can the LB-T60 directly replace the A02505 in existing applications?

A: Direct replacement is not recommended without application review. The LB-T60's 5A @ 125VAC/30VDC rating is significantly lower than the A02505's 16A @ 250VAC specification. Termination style differences (solder/quick connect versus screw terminal) also require mechanical compatibility assessment.

Q: What are the key differences between DPST-NO/NC and DPDT configurations?

A: DPST-NO/NC provides two independent poles with selectable normally open or normally closed contact states. DPDT provides two independent poles with both normally open and normally closed contacts per pole. Circuit topology differences may affect switching logic implementation.

Q: Is the LB-T60 suitable for high-current applications?

A: No. The LB-T60 is rated at 5A maximum, making it unsuitable for applications requiring the A02505's 16A capacity. Component selection must match application current requirements.

Q: Are both components compliant with current regulatory standards?

A: Both the A02505 and LB-T60 are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment for applications subject to these standards.

Q: What termination compatibility issues exist between these components?

A: The A02505 uses screw terminals for connection to switch bodies. The LB-T60 uses solder and quick connect (0.110" / 2.8mm) termination. Physical integration requires verification of switch body interface compatibility.