SVT864374 Solid State Relay SPST-NO 50A 24-520V Equivalent & Substitute Parts

Part Overview

The SVT864374 is a Solid State Relay (SSR) manufactured by Celduc Inc., configured as a Single Pole Single Throw Normally Open (SPST-NO) module with a 50A load current capacity and input voltage of 24VDC. The device supports load voltages ranging from 24V to 520V AC with zero-cross switching capability and is designed for chassis mount applications.

This part is classified as Obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and new design requirements where this model is no longer available through standard distribution channels.

Substiute Parts

SVT864374

Celduc Inc.In Stock: 820SVT864374 Datasheet

Current PartRFQ

SGT8850200

Celduc Inc.In Stock: 1044SGT8850200 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SVT864374 is based on the following critical electrical and mechanical parameters:

Load Current Capacity: The substitute part must support a minimum of 50A continuous load current to maintain functional equivalence in existing circuit designs.

Input Control Voltage: The substitute part must accept 24VDC input control voltage or a compatible range that includes 24VDC operation.

Load Voltage Range: The substitute part must support the full operating range of 24V to 520V AC, or a range that encompasses the maximum load voltage requirement of the application.

Output Switching Type: The substitute part must provide AC output switching with zero-cross detection to maintain compatibility with AC load switching requirements.

Mounting Configuration: The substitute part must be configured for chassis mount installation to ensure mechanical compatibility with existing enclosure designs.

Manufacturer Compliance: The substitute part must maintain RoHS compliance and equivalent moisture sensitivity ratings to ensure environmental and regulatory compatibility.

The SGT8850200 is identified as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SVT864374 is classified as Obsolete, making the SGT8850200 the appropriate selection for new designs and ongoing support. The SGT8850200 maintains Active product status with Celduc Inc., ensuring availability and continued manufacturer support.

Electrical Compatibility: The SGT8850200 meets or exceeds all critical electrical parameters of the SVT864374. The input voltage range of 4 ~ 30VDC encompasses the required 24VDC control voltage. The load voltage range of 24 V ~ 640 V AC exceeds the original specification of 24 V ~ 520 V AC, providing extended operational capability. Both devices maintain identical 50A load current capacity and AC zero-cross switching output type.

Regulatory Compliance: Both the original and substitute parts maintain RoHS Compliance status and equivalent Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited), ensuring environmental and regulatory compatibility across applications.

Circuit Configuration Difference: The SGT8850200 is configured as a 3PST-NO (3 Form A) module, compared to the SPST-NO (1 Form A) configuration of the SVT864374. This represents an increase in switching channels from one to three independent switching paths. Applications requiring only single-channel switching can utilize one of the three available channels, with the remaining channels available for additional load switching or left unused.

Mechanical Compatibility: Both devices are specified for Chassis Mount installation in Module package format, ensuring direct mechanical compatibility with existing enclosure designs and mounting infrastructure.

Frequently Asked Questions (FAQ)

Q: Can the SGT8850200 directly replace the SVT864374 in existing applications?

A: The SGT8850200 can replace the SVT864374 for applications requiring single-channel SPST-NO switching. The substitute part provides equivalent load current capacity (50A), compatible input voltage control (24VDC within the 4 ~ 30VDC range), and identical output switching characteristics (AC, zero-cross). The SGT8850200 provides three independent switching channels; applications using only one channel can utilize a single channel while leaving the others unused or available for future expansion.

Q: What is the significance of the circuit configuration difference between SPST-NO and 3PST-NO?

A: SPST-NO (Single Pole Single Throw Normally Open) provides one independent switching channel with a single load connection. 3PST-NO (Three Pole Single Throw Normally Open) provides three independent switching channels, each capable of independently switching a separate load. For applications requiring only single-channel operation, the SGT8850200 functions as a direct replacement by utilizing one of its three available channels.

Q: Are there any input voltage compatibility concerns?

A: No. The SVT864374 requires 24VDC input control voltage. The SGT8850200 accepts input voltages from 4 ~ 30VDC, which fully encompasses the 24VDC requirement. The substitute part operates within the specified input voltage range of the original device.

Q: Does the SGT8850200 support the same load voltage range?

A: The SGT8850200 supports a load voltage range of 24 V ~ 640 V AC, which exceeds the original specification of 24 V ~ 520 V AC. Applications operating within the original 24 V ~ 520 V AC range are fully supported by the substitute part.

Q: What is the on-state resistance specification for the SGT8850200?

A: The SGT8850200 specifies a maximum on-state resistance of 7.5 mOhms. This parameter was not provided for the original SVT864374 and therefore cannot be used as a comparison criterion.

Q: Are both parts RoHS compliant?

A: Yes. Both the SVT864374 and SGT8850200 maintain RoHS Compliance status, ensuring compatibility with environmental and regulatory requirements across applications.

Q: What is the packaging difference between the two parts?

A: The SVT864374 packaging is specified as a dash (not specified). The SGT8850200 is packaged in a Box format. Both devices are classified as Module package type for electrical and mechanical purposes.

Q: Is the SGT8850200 available for immediate use?

A: Yes. The SGT8850200 maintains Active product status with Celduc Inc. and is available through standard distribution channels, unlike the Obsolete SVT864374.