SSR-240D125 Equivalent & Substitute Parts

Part Overview

The SSR-240D125 is a solid-state relay (SSR) manufactured by TE Connectivity Potter & Brumfield Relays, configured as a SPST-NO (1 Form A) hockey puck design. This component operates as an AC output relay with zero-cross switching capability, rated for 125 A load current across a 24 V to 280 V operating range. The device accepts 4 V to 32 VDC input control signals and features screw terminal connections for chassis mount installation.

The SSR-240D125 maintains Active product status with 894 units currently in stock. Identification of equivalent and substitute parts becomes necessary when addressing supply chain requirements, design optimization, or inventory management across manufacturing operations.

Substiute Parts

SSR-240D125

TE Connectivity Potter & Brumfield RelaysIn Stock: 937SSR-240D125 Datasheet

Current PartRFQ

G3NA-290B-UTU DC5-24

Omron Automation and SafetyIn Stock: 1215G3NA-290B-UTU DC5-24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSR-240D125 is determined by alignment across the following critical parameters:

Circuit Configuration: Both the main part and substitute must maintain SPST-NO (1 Form A) topology to ensure functional equivalence in switching applications.

Output Type: AC output with zero-cross switching capability is required to preserve control characteristics and load switching behavior.

Package / Case: Hockey puck form factor and chassis mount orientation must be maintained for mechanical compatibility within existing enclosures and mounting structures.

Termination Style: Screw terminal connections are mandatory to ensure compatibility with existing wiring and connection infrastructure.

Voltage Ranges: The substitute part must accommodate the load voltage range (24 V to 280 V) and input control voltage range (4 V to 32 VDC) specified for the SSR-240D125.

Load Current Rating: The substitute part must support the 125 A load current requirement or provide equivalent current-handling capacity.

The G3NA-290B-UTU DC5-24 manufactured by Omron Automation and Safety qualifies as a substitute based on matching circuit configuration, output type, package design, termination style, and overlapping voltage and current specifications.

Parameter Comparison

Engineering Selection Recommendations

SSR-240D125 (Primary Selection)

The SSR-240D125 maintains Active product status with established supply availability (894 units in stock). This component is ROHS3 compliant and REACH affected, meeting current regulatory requirements for electronic component manufacturing and distribution. The 125 A load current rating and 4 V to 32 VDC input range provide operational flexibility across diverse control architectures.

G3NA-290B-UTU DC5-24 (Substitute Selection)

The G3NA-290B-UTU DC5-24 qualifies as a functional substitute where load current requirements do not exceed 90 A and input control voltages remain within the 5 V to 24 VDC range. This component carries Obsolete product status, indicating discontinued manufacturing and limited long-term availability (1115 units currently in stock). RoHS compliance is confirmed; REACH status requires verification before deployment in regulated markets.

Selection Criteria

Choose the SSR-240D125 for new designs, production continuity, and applications requiring the full 125 A load current capacity. Select the G3NA-290B-UTU DC5-24 only when application parameters fall within its reduced current and voltage specifications and when existing inventory or legacy system compatibility justifies use of an obsolete component.

Frequently Asked Questions (FAQ)

Q: Can the G3NA-290B-UTU DC5-24 directly replace the SSR-240D125 in all applications?

A: No. The G3NA-290B-UTU DC5-24 is rated for 90 A maximum load current, compared to the SSR-240D125 rating of 125 A. Applications requiring load currents between 90 A and 125 A cannot use the G3NA substitute. Additionally, the G3NA input voltage range (5 V to 24 VDC) is narrower than the SSR-240D125 range (4 V to 32 VDC), limiting compatibility with control systems operating at the extremes of the SSR-240D125 specification.

Q: What are the mechanical compatibility considerations between these parts?

A: Both components share identical mechanical specifications: hockey puck package design, chassis mount orientation, and screw terminal connections. Physical installation and wiring connections are compatible between the two parts.

Q: How do the voltage specifications compare?

A: The SSR-240D125 accepts input control signals from 4 V to 32 VDC, while the G3NA-290B-UTU DC5-24 accepts 5 V to 24 VDC. The G3NA specification is a subset of the SSR-240D125 range. For load voltage, the SSR-240D125 operates across 24 V to 280 V, while the G3NA operates across 19 V to 264 V. Both components support the same AC output with zero-cross switching topology.

Q: What is the significance of the Obsolete product status for the G3NA-290B-UTU DC5-24?

A: Obsolete status indicates that the manufacturer has discontinued production of this component. While current inventory exists (1115 units), future availability cannot be guaranteed. New designs should not incorporate obsolete components. Existing systems using the G3NA should establish transition plans to the SSR-240D125 or equivalent active-status alternatives.

Q: Are both components RoHS compliant?

A: The SSR-240D125 is ROHS3 compliant. The G3NA-290B-UTU DC5-24 is RoHS compliant. Both meet RoHS requirements, though the SSR-240D125 meets the more recent ROHS3 standard. REACH compliance is confirmed for the SSR-240D125; REACH status for the G3NA requires verification.

Q: What load current applications are suitable for each component?

A: The SSR-240D125 supports applications requiring load currents up to 125 A. The G3NA-290B-UTU DC5-24 supports applications up to 90 A. Applications with load current requirements between 90 A and 125 A must use the SSR-240D125.