RAM1A23A50 Solid State Relay SPST-NO 50A 24-265V

Part Overview

The RAM1A23A50 is an active solid state relay (SSR) manufactured by Carlo Gavazzi Inc., classified as a SPST-NO (1 Form A) hockey puck configuration. This component functions as an electronic switch for AC loads with zero-cross detection capability. The device is designed for chassis mount applications with screw terminal connections and operates across a wide input voltage range of 20–280VAC or 22–48VDC, controlling loads from 24V to 265V at 50A capacity.

The RAM1A23A50 remains in active product status with 823 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

RAM1A23A50

Carlo Gavazzi Inc.In Stock: 895RAM1A23A50 Datasheet

Current PartRFQ

84137021

Sensata-CrydomIn Stock: 102984137021 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RAM1A23A50 is determined by strict equivalence across the following critical parameters:

Circuit Configuration: Both the main part and substitute must maintain SPST-NO (1 Form A) topology to ensure identical switching behavior and control logic compatibility.

Output Type: AC output with zero-cross detection is mandatory for all substitutes to preserve load switching characteristics and electromagnetic interference mitigation.

Load Current: The 50A rating is a fixed requirement; no derating or uprating is permitted.

Package / Case: Hockey puck form factor and chassis mount configuration must be preserved for mechanical and thermal interface compatibility.

Termination Style: Screw terminal connections are required for direct installation compatibility.

Voltage Ranges: Input voltage tolerance (20–280VAC minimum) and load voltage range (24V minimum to 265V minimum) establish the operational envelope. Substitutes with equal or broader voltage specifications are acceptable.

Compliance: RoHS compliance status and MSL rating must be maintained or exceeded.

The substitute part 84137021 (Sensata-Crydom GN series) meets all substitution criteria with equivalent electrical performance and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (RAM1A23A50): Recommended for new designs and applications requiring input voltage tolerance down to 20VAC. This part maintains active product status with established supply chain presence and ROHS3 compliance certification.

Substitute Part (84137021): Acceptable for applications where input voltage does not fall below 90VAC. The Sensata-Crydom GN series provides equivalent switching performance with a broader load voltage range (24–280V versus 24–265V). Both parts carry identical MSL ratings and active product status. The substitute is suitable for direct replacement in existing installations where input voltage specifications align with the 90–280VAC range.

Compliance Considerations: Both parts satisfy RoHS requirements and carry MSL Level 1 (unlimited moisture sensitivity), indicating no special storage or handling constraints. Selection between these parts should be based on input voltage requirements and supply chain availability rather than compliance or reliability factors.

Frequently Asked Questions (FAQ)

Q: Can the 84137021 substitute for the RAM1A23A50 in all applications?

A: The 84137021 is a direct functional substitute for applications where the control input voltage remains within the 90–280VAC range. If your application requires input voltage tolerance below 90VAC (down to 20VAC), the RAM1A23A50 is the required part. Both parts are electrically and mechanically equivalent for load switching, current capacity, and output voltage range.

Q: What is the difference in load voltage range between these two parts?

A: The RAM1A23A50 operates with load voltages from 24V to 265V. The 84137021 extends the upper limit to 280V. For applications requiring load voltages above 265V, the 84137021 provides additional operational margin. Both parts function identically within the 24–265V overlap range.

Q: Are the physical dimensions and mounting interfaces identical?

A: Yes. Both parts use the hockey puck form factor with chassis mount configuration and screw terminal connections. Direct mechanical substitution is supported without modification to mounting hardware or terminal connections.

Q: What is the significance of the packaging difference (Box versus Bulk)?

A: Packaging format does not affect electrical or mechanical performance. Box packaging typically includes individual unit documentation and protective wrapping, while bulk packaging reduces per-unit cost for high-volume procurement. Component functionality remains identical regardless of packaging format.

Q: Do both parts require special handling or storage conditions?

A: No. Both parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity constraints. Standard industrial storage conditions are appropriate for both the RAM1A23A50 and 84137021.

Q: Which part should I select for a new design?

A: Selection depends on your control input voltage requirements. If your design operates with input voltages below 90VAC, specify the RAM1A23A50. For applications with input voltages in the 90–280VAC range, either part is acceptable. Verify load voltage requirements; if your application requires voltages above 265V, the 84137021 is preferred.