OSSRA0010A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The OSSRA0010A 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 40A capacity across 50-250V load voltage range and 100-240VAC input control voltage. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications.

Substiute Parts

OSSRA0010A

TT Electronics/Optek TechnologyIn Stock: 1276OSSRA0010A Datasheet

Current PartRFQ

84134121

Sensata-CrydomIn Stock: 72184134121 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSSRA0010A 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 capability
• Package must be Hockey Puck with screw terminal termination
• Mounting type must be Chassis Mount
• Load current rating must meet or exceed 40A
• Load voltage range must encompass or exceed 50-250V
• Input voltage range must be compatible with 100-240VAC control signal

The substitute part 84134121 (Sensata-Crydom GN series) satisfies all substitution criteria with enhanced electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The 84134121 is a direct functional substitute for the OSSRA0010A. The substitute part maintains identical circuit topology, output switching characteristics, and physical form factor while providing enhanced electrical performance margins. The 84134121 offers increased load current capacity (50A versus 40A) and expanded load voltage range (48-660V versus 50-250V), ensuring compatibility with the original application envelope. The substitute part's active product status ensures ongoing availability and supply chain continuity, addressing the obsolescence constraint of the original component. Both parts maintain ROHS3 compliance, supporting regulatory requirements for new designs and system upgrades.

Frequently Asked Questions (FAQ)

Q: Can the 84134121 directly replace the OSSRA0010A in existing applications?

A: Yes. Both parts share identical circuit configuration (SPST-NO), output type (AC zero-cross), package form factor (Hockey Puck), and termination style (screw terminal). The substitute part's higher current rating (50A) and expanded voltage range (48-660V) are compatible with applications designed for the original 40A/50-250V specification.

Q: What are the key differences between these parts?

A: The primary differences are manufacturer (TT Electronics/Optek versus Sensata-Crydom), product status (obsolete versus active), and electrical performance margins. The 84134121 provides 25% higher current capacity and significantly broader load voltage range, with input voltage range expanded from 100-240VAC to 90-280VAC.

Q: Are there any mechanical compatibility concerns?

A: No. Both parts use identical Hockey Puck packaging with screw terminal termination and chassis mount configuration. Physical dimensions and mounting interfaces are compatible.

Q: Does the substitute part meet the same compliance standards?

A: Yes. The 84134121 maintains ROHS3 compliance equivalent to the original part. The substitute is REACH Affected, whereas the original is REACH Unaffected; however, this does not impact functional substitution for applications already using the original component.

Q: What is the significance of the "Active" product status for the substitute?

A: Active product status indicates the 84134121 is in current production with established supply chain availability. This addresses the obsolescence of the OSSRA0010A and ensures long-term component availability for maintenance and redesign applications.