OSSRA0011A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The OSSRA0011A is a solid state relay (SSR) manufactured by TT Electronics/Optek Technology, configured as a SPST-NO (1 Form A) device in a hockey puck package. This component is designed for AC load switching applications with a 25A capacity and operates across a 75V to 480V load voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

OSSRA0011A

TT Electronics/Optek TechnologyIn Stock: 1258OSSRA0011A Datasheet

Current PartRFQ

84134111

Sensata-CrydomIn Stock: 116284134111 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSSRA0011A is determined by the following critical parameters:

• Circuit configuration must be SPST-NO (1 Form A)
• Output type must be AC with zero cross switching
• Load current rating must be 25 A
• Package must be hockey puck with screw terminal termination
• Mounting type must be chassis mount
• Load voltage range must encompass or exceed the original 75V to 480V specification
• Input voltage range must be compatible with 100 ~ 240 VAC operation

The substitute part 84134111 (Sensata-Crydom GN series) meets these criteria with a load voltage range of 48V to 660V, which provides extended coverage beyond the original specification, and an input voltage range of 90 ~ 280 VAC, which encompasses the original requirement.

Parameter Comparison

Engineering Selection Recommendations

The 84134111 (Sensata-Crydom) is the designated substitute for the obsolete OSSRA0011A. Both components maintain identical circuit configuration, output switching characteristics, current rating, and physical form factor. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The substitute part extends the load voltage operating range from 75V–480V to 48V–660V, providing broader application flexibility. The input voltage range expansion from 100–240VAC to 90–280VAC maintains compatibility with the original specification while accommodating wider input variations.

Both parts carry ROHS3 compliance certification. The substitute part is REACH Affected, whereas the original part is REACH Unaffected; compliance verification against specific regulatory requirements for your application is necessary.

Frequently Asked Questions (FAQ)

Q: Can the 84134111 directly replace the OSSRA0011A in existing applications?

A: Yes. Both components share identical circuit configuration (SPST-NO), output type (AC, zero cross), current rating (25A), package form (hockey puck), and termination method (screw terminal). The substitute part's extended voltage ranges are backward compatible with the original specification.

Q: What is the significance of the extended load voltage range in the substitute part?

A: The 84134111 operates across 48V to 660V, compared to the original 75V to 480V range. This extension provides compatibility with a broader range of load voltages while maintaining full compatibility with applications designed for the original 75V to 480V window.

Q: Are there differences in input voltage requirements?

A: The substitute part accepts 90 ~ 280 VAC input, compared to the original 100 ~ 240 VAC. The substitute range is wider and encompasses the original specification, ensuring compatibility with the same control voltage sources.

Q: What is the impact of the REACH Affected status on the substitute part?

A: The 84134111 carries REACH Affected designation, indicating it may contain substances subject to REACH regulation. Verification of compliance with your specific regulatory jurisdiction and application requirements is necessary before implementation.

Q: Does the hockey puck package ensure mechanical compatibility?

A: Yes. Both the original and substitute parts use identical hockey puck packaging with screw terminal termination and chassis mount configuration, ensuring direct mechanical and electrical compatibility in existing mounting and wiring configurations.