D4BL-3CRA Interlock Solenoid Release - Equivalent & Substitute Parts

Part Overview

The D4BL-3CRA is an interlock solenoid release switch manufactured by Omron Automation and Safety, classified as a DPST (Double Pole Single Throw) solenoid release device. This component is designed for panel disconnect applications requiring 24VDC supply voltage with 250VAC rated switching capacity at 3A AC current. The product is currently obsolete, making identification of equivalent and substitute parts essential for system maintenance, repair, and component sourcing.

Substiute Parts

D4BL-3CRA

Omron Automation and SafetyIn Stock: 1026D4BL-3CRA Datasheet

Current PartRFQ

D4BL-2CRA

Omron Automation and SafetyIn Stock: 911D4BL-2CRA Datasheet

SimilarRFQ

D4NL-4AFA-B

Omron Automation and SafetyIn Stock: 1230D4NL-4AFA-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the D4BL-3CRA is determined by the following critical parameters:

Primary Compatibility Criteria:

• Supply voltage: 24VDC
• Actuator type: Panel Disconnect
• Termination style: Screw Terminal
• Operating temperature range: -10°C to 55°C
• Ingress protection: IP67 minimum
• Circuit configuration: DPST-NO/NC capability

Substitute Parts Identified:

D4BL-2CRA qualifies as a direct substitute. This part maintains identical electrical specifications (3A AC, 250VAC, 24VDC supply), circuit configuration (DPST-NO/NC + SPST-NC), holding force (71kgf), actuator type, termination style, operating temperature range, and IP67 rating. The primary difference is product status (Active vs. Obsolete) and conduit thread specification (G1/2 vs. 1/2" NPT). Both specifications accommodate standard panel disconnect installations.

D4NL-4AFA-B qualifies as a functional substitute with enhanced specifications. This part shares the same supply voltage (24VDC), actuator type (Panel Disconnect), termination style (Screw Terminal), operating temperature range, and IP67 rating. Key differences include higher holding force (133kgf vs. 71kgf), dual DPST-NO/NC circuit configuration (vs. DPST-NO/NC + SPST-NC), expanded voltage rating (240VAC/250VDC vs. 250VAC only), and DC current capability (270mA). The D4NL series represents an upgraded platform with additional status indicator functionality.

Parameter Comparison

Engineering Selection Recommendations

D4BL-2CRA Selection: This part is the preferred direct replacement for D4BL-3CRA applications. It maintains identical electrical performance, mechanical specifications, and environmental ratings while offering the advantage of Active product status with established supply chain availability. Both parts carry equivalent regulatory approvals (CCC, CE, CSA, UL). The D4BL-2CRA achieves ROHS3 compliance and REACH documentation, addressing modern regulatory requirements. Conduit thread specification differences (G1/2 vs. 1/2" NPT) are mechanically compatible for standard panel disconnect installations.

D4NL-4AFA-B Selection: This part serves as a functional upgrade option for applications where enhanced holding force (133kgf vs. 71kgf) provides system benefits. The D4NL-4AFA-B expands regulatory coverage with cULus and TUV certifications in addition to CCC and CE approvals. The integrated status indicator feature and dual DPST-NO/NC circuit configuration offer expanded functionality. This substitution is appropriate when system design permits the higher holding force specification and when the additional certifications align with regional compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can D4BL-2CRA directly replace D4BL-3CRA in existing installations?

A: Yes. The D4BL-2CRA maintains identical electrical specifications (3A AC, 250VAC, 24VDC), circuit configuration (DPST-NO/NC + SPST-NC), holding force (71kgf), and environmental ratings (IP67, -10°C to 55°C). Both parts use screw terminal connections and panel disconnect actuators. The conduit thread specification difference (G1/2 vs. 1/2" NPT) does not prevent mechanical compatibility in standard panel disconnect applications.

Q: What are the key differences between D4BL-2CRA and D4NL-4AFA-B?

A: The D4NL-4AFA-B provides higher holding force (133kgf vs. 71kgf), expanded voltage rating (240VAC/250VDC vs. 250VAC only), DC current capability (270mA), and integrated status indicator functionality. The circuit configuration differs: D4NL-4AFA-B uses dual DPST-NO/NC versus D4BL-2CRA's DPST-NO/NC + SPST-NC configuration. Both maintain 24VDC supply voltage, IP67 rating, and -10°C to 55°C operating range.

Q: Why is D4BL-3CRA listed as Obsolete?

A: The D4BL-3CRA has been discontinued by Omron Automation and Safety. The D4BL-2CRA serves as the active replacement within the same D4BL series, offering equivalent performance with current manufacturing support and regulatory documentation.

Q: Are there packaging differences between these parts?

A: D4BL-3CRA packaging is specified as "-" (not defined). D4BL-2CRA and D4NL-4AFA-B are supplied in Bulk packaging. Packaging format does not affect electrical or mechanical compatibility; it reflects supply chain configuration only.

Q: Which substitute part should be selected for new system designs?

A: For direct performance matching, D4BL-2CRA is the appropriate choice. For applications requiring enhanced holding force or expanded regulatory certifications, D4NL-4AFA-B is suitable. Both parts are Active products with established supply availability and ROHS3/REACH compliance.

Q: Do all three parts share the same approval certifications?

A: D4BL-3CRA and D4BL-2CRA both carry CCC, CE, CSA, and UL approvals. D4NL-4AFA-B carries CCC, CE, cULus, and TUV approvals. The cULus and TUV certifications on the D4NL-4AFA-B provide additional regional compliance coverage. All three parts meet the specified approval requirements for their respective applications.