Omron D4GL-1HFG-A4 Interlock Solenoid Locking Switch - Equivalent & Substitute Parts

Part Overview

The Omron D4GL-1HFG-A4 is a solenoid locking interlock switch designed for panel disconnect applications with 3PST-NC + DPST-NC circuit configuration. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design implementations. The D4GL series has been superseded by the active D4SL-N series, which maintains functional compatibility while offering enhanced availability and active product support.

Substiute Parts

D4GL-1HFG-A4

Omron Automation and SafetyIn Stock: 816D4GL-1HFG-A4 Datasheet

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D4SL-N4HFG-D4

Omron Automation and SafetyIn Stock: 1122D4SL-N4HFG-D4 Datasheet

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D4SL-N4HFG-D4N

Omron Automation and SafetyIn Stock: 1132D4SL-N4HFG-D4N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the D4GL-1HFG-A4 is based on the following critical parameters that must remain consistent:

Mandatory Compatibility Parameters:

• Solenoid locking type and panel disconnect actuator function
• 3PST-NC + DPST-NC circuit configuration
• 24VDC supply voltage
• IP67 ingress protection rating
• Operating temperature range -10°C ~ 55°C
• Status indicator feature
• Screw terminal or connector termination (application-dependent)

Acceptable Variation Parameters:

• Current rating: The D4GL-1HFG-A4 operates at 750mA AC; substitute parts rated for 1.5A AC provide higher capacity
• Voltage rating: Substitute parts rated for 120VAC/125VDC are compatible with 240VAC applications when properly configured
• Holding force: Substitute parts rated for 6kgf are suitable for applications not requiring the full 102kgf specification
• Conduit thread size: M20 (substitute) differs from PG14.6 (original) and requires mechanical adaptation
• Approval agencies: Substitute parts maintain equivalent certifications (CE, TUV) with additional CCC and cURus approvals

The D4SL-N series (D4SL-N4HFG-D4 and D4SL-N4HFG-D4N) are active products that fulfill these substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

D4SL-N4HFG-D4 (Screw Terminal Configuration)

Select this substitute when the original screw terminal connection method is required. This part maintains direct electrical compatibility with existing wiring harnesses designed for the D4GL-1HFG-A4. The active product status ensures ongoing availability and technical support from Omron. Mechanical adaptation is required for the M20 conduit thread size transition from the original PG14.6 specification.

D4SL-N4HFG-D4N (Connector Configuration)

Select this substitute when connector-based termination is preferred for the application. This configuration offers the same electrical performance as the screw terminal variant with enhanced modularity. The connector termination style may simplify installation and maintenance procedures in panel disconnect applications.

Compliance Considerations

Both substitute parts maintain CE and TUV certifications equivalent to the original D4GL-1HFG-A4. The D4SL-N series adds CCC and cURus approvals, providing expanded regulatory coverage. RoHS compliance is confirmed for both substitute parts, supporting environmental and regulatory requirements.

Holding Force Differential

The substitute parts operate at 6kgf holding force compared to the original 102kgf specification. This reduction is acceptable for applications where the original holding force specification exceeds functional requirements. For applications requiring the full 102kgf holding force, alternative solutions outside the D4SL-N series must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can D4SL-N4HFG-D4 and D4SL-N4HFG-D4N be used interchangeably?

A: Both parts share identical electrical specifications and circuit configuration. The primary difference is termination style: screw terminal versus connector. Selection depends on the installation method and wiring infrastructure of the specific application. Mechanical and electrical compatibility with existing connections must be verified before substitution.

Q: What mechanical adaptation is required for the conduit thread size change from PG14.6 to M20?

A: The original D4GL-1HFG-A4 uses PG14.6 conduit threading, while substitute D4SL-N parts use M20 threading. Mechanical adapters or panel modifications may be necessary to accommodate this dimensional difference. Consult mechanical design specifications for your panel assembly to determine adapter requirements.

Q: Is the reduced holding force of 6kgf suitable for my application?

A: The D4GL-1HFG-A4 specifies 102kgf holding force, while D4SL-N substitutes provide 6kgf. Evaluate your application's mechanical load requirements. If the original 102kgf specification is mandatory, the D4SL-N series is not suitable, and alternative Omron solenoid locking products must be considered.

Q: Are the substitute parts RoHS compliant?

A: Yes, both D4SL-N4HFG-D4 and D4SL-N4HFG-D4N are RoHS compliant. The original D4GL-1HFG-A4 RoHS status is not specified in the available documentation.

Q: What is the inventory status for these substitute parts?

A: D4SL-N4HFG-D4 has 1077 pieces in stock. D4SL-N4HFG-D4N has 1109 pieces in stock. Both are classified as active products with confirmed ongoing availability from Omron Automation and Safety.

Q: Can the D4SL-N series handle the 240VAC voltage rating of the original part?

A: The D4SL-N series is rated for 120VAC/125VDC. While the substitute parts operate at the same 24VDC supply voltage as the original, the load voltage rating differs. Application-specific circuit design must ensure compatibility with the 120VAC/125VDC load rating of the substitute parts.