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

Part Overview

The Omron D4GL-1AFG-A4 is an interlock solenoid locking switch classified as a DPST (Double Pole Single Throw) device with dual NO/NC circuits. This component functions as a panel disconnect actuator with a holding force of 102kgf, designed for 240VAC operation with 24VDC supply voltage. The D4GL-1AFG-A4 is currently listed as obsolete, necessitating identification of functionally equivalent active alternatives to maintain system continuity and ensure ongoing component availability for new installations and maintenance applications.

Substiute Parts

D4GL-1AFG-A4

Omron Automation and SafetyIn Stock: 902D4GL-1AFG-A4 Datasheet

Current PartRFQ

D4SL-N4AFG

Omron Automation and SafetyIn Stock: 2247D4SL-N4AFG Datasheet

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D4SL-N4AFG-N

Omron Automation and SafetyIn Stock: 789D4SL-N4AFG-N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete D4GL-1AFG-A4 is based on the following critical parameters that define functional equivalence within the Omron interlock solenoid locking switch product family:

Primary Substitution Criteria:

• Circuit configuration: DPST-NO/NC (DB/DM) x 2 (dual pole configuration maintained)
• Actuator type: Panel Disconnect (mechanical interface compatibility)
• Ingress protection: IP67 rating (environmental sealing requirement)
• Operating temperature range: -10°C to 55°C (thermal operating envelope)
• Termination compatibility: Screw Terminal or Connector options
• Product status: Active (ongoing availability and support)

Identified Substitute Parts:

• D4SL-N4AFG (Screw Terminal variant)
• D4SL-N4AFG-N (Connector variant)

Both substitutes belong to the D4SL-N series, which represents the active product line continuation within Omron's interlock solenoid locking switch portfolio. These parts maintain the required circuit topology and environmental ratings while offering improved current handling and voltage flexibility compared to the obsolete D4GL series.

Parameter Comparison

Engineering Selection Recommendations

D4SL-N4AFG (Screw Terminal Variant) is the primary substitute for applications requiring direct termination compatibility with the original D4GL-1AFG-A4. This part maintains screw terminal connectivity and is actively supported by Omron with full compliance certifications including CCC, CE, cURus, and TUV. Current inventory of 2200 units ensures supply continuity.

D4SL-N4AFG-N (Connector Variant) serves as an alternative for new system designs or retrofits where connector-based termination is preferred. This variant offers identical electrical and environmental specifications to the screw terminal version while providing enhanced modularity through connector-based interface.

Critical Design Considerations:

The D4SL-N series substitutes exhibit reduced holding force (6kgf versus 102kgf) and operate at lower voltage ratings (120VAC/125VDC versus 240VAC/24VDC). These electrical parameter differences require system-level evaluation to confirm compatibility with existing control circuits and mechanical load requirements. The conduit thread size transitions from PG14.6 to M20, necessitating mechanical interface verification during installation.

Both substitute parts carry expanded regulatory approvals (CCC addition) compared to the obsolete D4GL-1AFG-A4, supporting deployment in regulated industrial environments.

Frequently Asked Questions (FAQ)

Q: Can D4SL-N4AFG directly replace D4GL-1AFG-A4 without circuit modification?

A: Both parts maintain identical DPST-NO/NC (DB/DM) x 2 circuit topology and panel disconnect actuator configuration. However, the D4SL-N series operates at 120VAC/125VDC versus the original 240VAC/24VDC specification. Circuit voltage compatibility must be verified before substitution.

Q: What is the difference between D4SL-N4AFG and D4SL-N4AFG-N?

A: The primary difference is termination style. D4SL-N4AFG uses screw terminals for direct wire connection, while D4SL-N4AFG-N employs a connector interface. Electrical performance and environmental ratings are identical. Selection depends on installation methodology and existing wiring infrastructure.

Q: Does the reduced holding force of D4SL-N series (6kgf) affect mechanical performance?

A: The D4SL-N series holding force of 6kgf differs significantly from the D4GL-1AFG-A4 specification of 102kgf. Applications dependent on high holding force must evaluate whether the substitute part meets mechanical load requirements. This parameter is application-specific and requires engineering assessment.

Q: Are regulatory certifications equivalent between the obsolete and substitute parts?

A: The D4SL-N series carries CCC, CE, cURus, and TUV certifications, providing broader regulatory coverage than the original D4GL-1AFG-A4 (CE, cULus, TUV). Both parts maintain IP67 ingress protection and MSL 1 moisture sensitivity ratings, supporting deployment in equivalent environmental conditions.

Q: What is the impact of conduit thread size change from PG14.6 to M20?

A: The transition from PG14.6 to M20 conduit threading requires mechanical interface verification. Existing panel cutouts and mounting hardware designed for PG14.6 may require modification to accommodate M20 threading. Physical installation compatibility must be confirmed during system integration.

Q: Is the D4SL-N series suitable for new equipment designs?

A: Yes. The D4SL-N series is actively supported by Omron with full regulatory certifications and current inventory availability. For new designs, D4SL-N4AFG (screw terminal) or D4SL-N4AFG-N (connector) are the recommended interlock solenoid locking switch options within the Omron product portfolio.