CKRB4810 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The CKRB4810 is a Solid State SPST-NO (1 Form A) relay manufactured by Sensata-Crydom, designed for applications requiring single-pole, single-throw normally open switching. This component integrates a heat sink for thermal management in industrial control circuits. The part operates across a voltage range of 48-530V with a 10A load capacity. Finding equivalent or substitute parts may be necessary due to inventory constraints, application-specific requirements, or design optimization needs.

Substiute Parts

CKRB4810

Sensata-CrydomIn Stock: 993CKRB4810 Datasheet

Current PartRFQ

DR2260A20U

Sensata-CrydomIn Stock: 1037DR2260A20U Datasheet

MFR RecommendedRFQ

GNR20BCZH

CrouzetIn Stock: 1136GNR20BCZH Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CKRB4810 is determined by the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) topology must be maintained
• Output Type: AC switching with zero-cross detection capability
• Load Current Rating: Minimum 10A capacity required
• Load Voltage Range: Must accommodate 48V to 530V operation
• Package Type: Integrated heat sink design for thermal performance
• Termination: Screw terminal connection standard

The substitute parts identified (DR2260A20U and GNR20BCZH) meet or exceed these core parameters while maintaining functional equivalence for the CKRB4810 application space.

Parameter Comparison

Engineering Selection Recommendations

DR2260A20U (Sensata-Crydom, MFR Recommended)

The DR2260A20U is the manufacturer-recommended substitute for the CKRB4810. Both components are manufactured by Sensata-Crydom, ensuring design consistency and compatibility. The DR2260A20U provides a higher load current rating (20A vs. 10A) and extended voltage range (48-600V vs. 48-530V), making it suitable for applications requiring greater capacity headroom. The part is ROHS3 compliant and REACH affected, meeting current regulatory standards. DIN Rail mounting capability provides flexible installation options.

GNR20BCZH (Crouzet, Direct Manufacturer Alternative)

The GNR20BCZH is a cross-manufacturer substitute manufactured by Crouzet. It maintains the same SPST-NO circuit topology and zero-cross AC output type. The part offers the highest load voltage range (48-660V) and equivalent 20A current capacity. RoHS compliance and REACH unaffected status indicate full regulatory alignment. Dual mounting options (Chassis Mount and DIN Rail) provide installation flexibility. The module package type differs from the integrated heat sink design but maintains thermal management capability.

Frequently Asked Questions (FAQ)

Q: Can the DR2260A20U directly replace the CKRB4810 in existing designs?

A: Yes. Both parts share identical circuit topology (SPST-NO), output type (AC, Zero Cross), and termination style (Screw Terminal). The DR2260A20U's higher current rating (20A) and extended voltage range (48-600V) are backward compatible with CKRB4810 applications. Physical mounting and thermal characteristics must be verified for the specific installation.

Q: What are the key differences between DR2260A20U and GNR20BCZH?

A: Both parts provide equivalent electrical functionality. The primary differences are manufacturer (Sensata-Crydom vs. Crouzet), package type (integrated heat sink vs. module), mounting options, and regulatory status. The GNR20BCZH offers a wider load voltage range (48-660V) and REACH unaffected status, while the DR2260A20U is the OEM-recommended option with ROHS3 compliance.

Q: Are there input voltage differences between these substitutes?

A: Yes. The CKRB4810 input voltage specification is not provided in the available data. The DR2260A20U accepts 90-280VAC/DC input, while the GNR20BCZH accepts 80-140VAC input. Input voltage compatibility must be confirmed for the specific application before substitution.

Q: What mounting considerations apply to these substitutes?

A: The DR2260A20U supports DIN Rail mounting. The GNR20BCZH supports both Chassis Mount and DIN Rail mounting, providing greater installation flexibility. The original CKRB4810 mounting type is not specified in available documentation and should be verified against the application requirements.

Q: Are all three parts RoHS compliant?

A: The DR2260A20U is ROHS3 compliant. The GNR20BCZH is RoHS compliant. The CKRB4810 RoHS status is not specified in the available data. Both substitutes meet current RoHS requirements for new designs.