D4840-10 Solid State Relay SPST-NO 40A 80-530V Equivalent & Substitute Parts

Part Overview

The D4840-10 is a Solid State Relay (SSR) with SPST-NO (1 Form A) configuration manufactured by Sensata-Crydom. This hockey puck-style relay is designed for AC load switching applications with a rated load current of 40A and load voltage range of 80V to 530V. The device operates with a 3-32VDC input control signal and features screw terminal connections for chassis mount installation. The part maintains Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

D4840-10

Sensata-CrydomIn Stock: 873D4840-10 Datasheet

Current PartRFQ

84137320N

CrouzetIn Stock: 98084137320N Datasheet

MFR RecommendedRFQ

ASR-SI480D40RW-L

Altran Magnetics, LLCIn Stock: 858ASR-SI480D40RW-L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D4840-10 are qualified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO (1 Form A)
• Output type: AC
• Package / Case: Hockey Puck
• Mounting type: Chassis Mount
• Termination style: Screw Terminal

Electrical Parameter Ranges:

• Input voltage range must encompass or overlap with 3-32VDC
• Load voltage range must encompass or overlap with 80-530V
• Load current rating must meet or exceed 40A

Compliance Requirements:

• RoHS compliance status (RoHS3 or equivalent)
• REACH status documentation
• ECCN classification alignment

The identified substitute parts meet these criteria while maintaining functional equivalence for AC load switching applications in the specified voltage and current ranges.

Parameter Comparison

Engineering Selection Recommendations

D4840-10 (Sensata-Crydom): Primary selection for applications requiring the specified 80-530V load voltage range with 40A current capacity. RoHS3 compliance and Active product status ensure long-term availability and regulatory alignment. Recommended for new designs and applications with established supply chain relationships.

84137320N (Crouzet): Suitable for applications where load voltage range can extend to 48-660V and current capacity can utilize the higher 50A rating. The lower input voltage minimum of 4VDC (versus 3VDC) may require verification in control circuits operating near 3VDC. RoHS compliant with REACH Unaffected status. Active product status supports ongoing availability.

ASR-SI480D40RW-L (Altran Magnetics): Direct current and voltage equivalent with load voltage range of 48-530V. RoHS3 compliance matches the primary part. Input voltage minimum of 4VDC requires the same verification as the Crouzet substitute. REACH Unaffected status and Active product status support deployment in regulated environments.

All three parts share identical circuit configuration, output type, mounting method, package style, and termination approach, ensuring mechanical and electrical interchangeability within their respective parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can the 84137320N (50A) be used as a direct replacement for the D4840-10 (40A)?

A: The 84137320N is functionally compatible for applications operating at or below 40A load current. The higher 50A rating provides additional capacity margin. However, the load voltage range begins at 48V instead of 80V, which may affect applications requiring operation below 48V. Input voltage minimum is 4VDC instead of 3VDC.

Q: What is the significance of the load voltage range differences?

A: The D4840-10 operates from 80-530V, the 84137320N from 48-660V, and the ASR-SI480D40RW-L from 48-530V. Selection depends on the actual load voltage in the application. If load voltage is below 80V, only the 84137320N is suitable. If load voltage exceeds 530V, only the 84137320N supports operation up to 660V.

Q: Are all three parts housed in the same hockey puck package?

A: Yes. All three parts use identical hockey puck package style with screw terminal connections and chassis mount configuration, ensuring mechanical compatibility in existing installations.

Q: What is the impact of the input voltage range differences?

A: The D4840-10 accepts input signals from 3-32VDC, while both substitutes require 4-32VDC minimum. Applications using control signals below 4VDC must use the D4840-10. Applications operating at 4VDC or higher can use any of the three parts.

Q: How do RoHS compliance levels affect part selection?

A: The D4840-10 and ASR-SI480D40RW-L are RoHS3 compliant. The 84137320N is RoHS compliant. Both compliance levels meet current regulatory requirements. Selection should align with customer or end-market RoHS requirements.

Q: Are these parts suitable for the same AC load switching applications?

A: Yes. All three parts are SPST-NO AC output relays with identical circuit configuration and termination style. They are suitable for the same class of AC load switching applications, provided the specific load voltage and current requirements fall within each part's rated range.