CMA2450 Equivalent & Substitute Parts

Part Overview

The CMA2450 is a solid-state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 50A load current and 24–280V output voltage. Manufactured by Sensata-Crydom, this component features a hockey puck form factor with screw terminal connections and zero-cross AC output switching. The CMA2450 is classified as obsolete, necessitating identification of active equivalent models that maintain identical electrical and mechanical specifications for continued system support and procurement.

Substiute Parts

CMA2450

Sensata-CrydomIn Stock: 1029CMA2450 Datasheet

Current PartRFQ

84137021

Sensata-CrydomIn Stock: 102984137021 Datasheet

MFR RecommendedRFQ

A2450

Sensata-CrydomIn Stock: 1144A2450 Datasheet

MFR RecommendedRFQ

CWA2450

Sensata-CrydomIn Stock: 1027CWA2450 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMA2450 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) only
• Load Current Rating: 50 A
• Load Voltage Range: 24 V – 280 V
• Output Type: AC, Zero Cross
• Package / Case: Hockey Puck
• Termination Style: Screw Terminal
• Mounting Type: Chassis Mount

All three substitute parts (84137021, A2450, CWA2450) meet these criteria and are manufactured by Sensata-Crydom. The primary distinction between substitutes is product status (active vs. obsolete) and compliance certifications. Input voltage ranges vary among substitutes but do not affect load-side compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are electrically and mechanically equivalent to the CMA2450 and are currently in active production status. Selection among substitutes should be based on the following criteria:

84137021: Active product with standard RoHS compliance. Suitable for applications where input voltage range of 90–280 VAC is acceptable. Represents the direct active equivalent within the GN series.

A2450: Active product with ROHS3 compliance and REACH affected status. Provides the broadest input voltage range (90–280 VAC) and is suitable for applications requiring enhanced environmental compliance documentation.

CWA2450: Active product with ROHS3 compliance and REACH affected status. Functionally identical to A2450 with equivalent compliance certifications. Belongs to the CW24 series.

All substitutes maintain identical load-side electrical performance and physical form factor, ensuring direct replacement capability in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CMA2450 be directly replaced with any of the listed substitutes? A: Yes. All three substitute parts (84137021, A2450, CWA2450) are electrically and mechanically equivalent. Direct replacement is supported without circuit modification.

Q: What is the primary reason for substitution? A: The CMA2450 is obsolete. The substitute parts are active products with current manufacturing support and availability.

Q: Do the substitute parts have different input voltage requirements? A: The CMA2450 accepts 90–140 VAC input. All substitutes accept 90–280 VAC input, providing a wider input range. This does not affect compatibility; systems designed for 90–140 VAC operation remain fully compatible.

Q: Are there compliance differences between the substitutes? A: The CMA2450 and 84137021 carry standard RoHS compliance. A2450 and CWA2450 carry ROHS3 compliance and are REACH affected. Selection should align with system-level compliance requirements.

Q: Is the hockey puck form factor identical across all parts? A: Yes. All parts use identical hockey puck packaging with screw terminal connections and chassis mount configuration.

Q: Can substitutes be used interchangeably in the same application? A: Yes. All substitutes meet the same electrical and mechanical specifications for the 50A, 24–280V SPST-NO AC relay function.