CKRA6020-10 Solid State Relay SPST-NO 20A 48-660V Equivalent & Substitute Parts

Part Overview

The CKRA6020-10 is a Solid State SPST-NO (1 Form A) relay manufactured by Sensata-Crydom, designed for AC load switching applications with a 20A capacity across a 48V to 660V load voltage range. The unit features an integrated heat sink and DIN Rail mounting configuration with screw terminal connections. This part is classified as obsolete, necessitating identification of active equivalent models to maintain supply chain continuity and ensure long-term component availability for new designs and field replacements.

Substiute Parts

CKRA6020-10

Sensata-CrydomIn Stock: 1180CKRA6020-10 Datasheet

Current PartRFQ

DR2260A20UR

Sensata-CrydomIn Stock: 1140DR2260A20UR Datasheet

MFR RecommendedRFQ

GNR30ACZP

CrouzetIn Stock: 1048GNR30ACZP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CKRA6020-10 is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Output Type: Must support AC output for compatibility with existing load circuits
• Load Current Rating: Must be rated for minimum 20A continuous operation
• Load Voltage Range: Must encompass or exceed the 48V to 660V operating window
• Input Voltage Compatibility: Must accept 90 ~ 280VAC control signal input
• Mounting and Termination: Must support DIN Rail mounting with screw terminal connections to ensure physical and electrical integration into existing installations
• Regulatory Compliance: Must maintain RoHS Compliant status for regulatory continuity

Two substitute parts meet these criteria and are classified as active products with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

DR2260A20UR is the primary substitute for CKRA6020-10 applications. Both units are manufactured by Sensata-Crydom and share identical circuit configuration, load current rating, and termination specifications. The DR2260A20UR maintains active product status with current manufacturing support. The load voltage range of 48V to 600V covers the majority of standard industrial AC applications; however, applications requiring operation above 600V must be evaluated against the original 660V maximum specification. The DR2260A20UR accepts both AC and DC input signals, providing expanded control flexibility compared to the AC-only input of the CKRA6020-10.

GNR30ACZP is a secondary substitute option manufactured by Crouzet. This unit maintains SPST-NO circuit configuration and screw terminal termination. The GNR30ACZP provides a higher load current rating of 30A, offering design margin for applications approaching the 20A limit. The load voltage range of 24V to 500V is narrower than the original specification and does not support operation above 500V. The input voltage range begins at 180VAC, which excludes the lower 90-120VAC control signal range supported by the CKRA6020-10. The GNR30ACZP includes zero-cross switching capability and supports both chassis mount and DIN Rail configurations. Both substitute parts maintain RoHS Compliant status and active manufacturing status.

Frequently Asked Questions (FAQ)

Q: Can DR2260A20UR directly replace CKRA6020-10 in all applications?

A: DR2260A20UR is suitable for applications operating within the 48V to 600V load voltage range. Applications requiring load voltages between 600V and 660V require evaluation of the voltage margin reduction. Both units share identical 20A load current ratings, SPST-NO circuit configuration, DIN Rail mounting, and screw terminal termination.

Q: What is the primary difference between DR2260A20UR and GNR30ACZP?

A: DR2260A20UR maintains the original 20A load current rating and 48V to 600V load voltage range with input voltage acceptance from 90VAC. GNR30ACZP provides 30A load current capacity but operates within a narrower 24V to 500V load voltage range and requires minimum 180VAC input signal. GNR30ACZP includes zero-cross switching functionality not present in the original CKRA6020-10.

Q: Is GNR30ACZP compatible with control circuits designed for 90-120VAC input?

A: No. GNR30ACZP requires minimum 180VAC input voltage. Applications utilizing 90-120VAC control signals must use DR2260A20UR or verify alternative control signal conditioning.

Q: Does the higher 30A rating of GNR30ACZP provide backward compatibility with 20A load applications?

A: Yes. GNR30ACZP is rated for continuous operation at 30A and operates safely at lower current levels. However, the narrower load voltage range (24V to 500V) and higher minimum input voltage (180VAC) must be verified against application requirements before selection.

Q: Are all substitute parts RoHS Compliant?

A: Yes. CKRA6020-10, DR2260A20UR, and GNR30ACZP are all RoHS Compliant, maintaining regulatory continuity for applications subject to RoHS requirements.

Q: What mounting flexibility does GNR30ACZP provide compared to CKRA6020-10?

A: GNR30ACZP supports both chassis mount and DIN Rail mounting configurations, providing installation flexibility. CKRA6020-10 and DR2260A20UR are DIN Rail mounted only.