Omron D4GL-4FFG-A-NPT Interlock Solenoid Locking Switch - Equivalent & Substitute Parts

Part Overview

The Omron D4GL-4FFG-A-NPT is an interlock solenoid locking switch designed for panel disconnect applications with 3PST circuit configuration (2NC/1NO + DPST-NC). This component operates at 24VDC supply voltage with 240VAC rated switching capacity and provides 102kgf holding force. The D4GL-4FFG-A-NPT has reached obsolete product status, making equivalent substitute parts necessary for ongoing system maintenance and new installations where this functionality is required.

Substiute Parts

D4GL-4FFG-A-NPT

Omron Automation and SafetyIn Stock: 825D4GL-4FFG-A-NPT Datasheet

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D4SL-N3FFG-D

Omron Automation and SafetyIn Stock: 903D4SL-N3FFG-D Datasheet

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D4SL-N3FFG-DN

Omron Automation and SafetyIn Stock: 1251D4SL-N3FFG-DN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D4GL-4FFG-A-NPT are identified based on the following critical parameters that determine functional equivalence:

Mandatory Matching Parameters:

• Manufacturer: Omron Automation and Safety
• Type: Solenoid Locking
• Circuit Configuration: 3PST-2NC/1NO + DPST-NC
• Voltage Supply: 24VDC
• Actuator Type: Panel Disconnect
• Operating Temperature Range: -10°C ~ 55°C
• Ingress Protection: IP67
• Features: Status Indicator

Allowable Variations:

• Product Status: Active (preferred over obsolete)
• Voltage Rating: Different AC/DC ratings acceptable if supply voltage remains 24VDC
• Current Rating: May differ based on circuit design
• Holding Force: May differ based on application requirements
• Termination Style: Screw Terminal or Connector acceptable
• Conduit Thread Size: M20 or 1/2" NPT acceptable
• Approval Agencies: Extended certifications acceptable

The D4SL-N series (D4SL-N3FFG-D and D4SL-N3FFG-DN) meets all mandatory matching parameters and represents the active product line replacement for the obsolete D4GL series.

Parameter Comparison

Engineering Selection Recommendations

D4SL-N3FFG-D (Screw Terminal Configuration)

This substitute is recommended for applications requiring direct replacement with screw terminal connectivity. The D4SL-N3FFG-D maintains active product status with extended regulatory approvals (CCC, CE, cURus, TUV) compared to the obsolete D4GL-4FFG-A-NPT. The component preserves the 24VDC supply voltage, 3PST circuit configuration, panel disconnect actuator type, and IP67 ingress protection rating. The conduit thread size differs from M20 to 1/2" NPT, requiring mechanical interface verification during installation.

D4SL-N3FFG-DN (Connector Configuration)

This substitute is recommended for applications where connector-based termination is preferred or required. The D4SL-N3FFG-DN provides identical functional parameters to the D4SL-N3FFG-D with connector termination instead of screw terminals. This configuration may simplify installation and maintenance procedures in systems designed for quick-disconnect applications.

Key Considerations:

Both D4SL-N series substitutes operate at reduced holding force (6kgf versus 102kgf) and lower voltage rating (120VAC/125VDC versus 240VAC). These differences must be evaluated against specific application requirements. The D4SL-N series represents the current active product line from Omron for this functional category and carries extended regulatory compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can D4SL-N3FFG-D and D4SL-N3FFG-DN be used interchangeably?

A: Both parts share identical electrical and mechanical specifications. The only difference is termination style: D4SL-N3FFG-D uses screw terminals while D4SL-N3FFG-DN uses connector termination. Selection depends on the wiring interface requirements of your system.

Q: What is the impact of the reduced holding force (6kgf vs. 102kgf)?

A: The holding force difference reflects different design specifications between the D4GL and D4SL-N series. Application requirements must be evaluated to determine if 6kgf holding force is sufficient for your panel disconnect function.

Q: Are the voltage rating differences significant?

A: The D4GL-4FFG-A-NPT is rated for 240VAC switching, while D4SL-N substitutes are rated for 120VAC/125VDC. Both operate from 24VDC supply. Verify that your switching voltage requirements do not exceed 120VAC to ensure compatibility.

Q: What is the difference between M20 and 1/2" NPT conduit threads?

A: M20 is a metric thread size while 1/2" NPT is a standard pipe thread. The conduit interface must be verified during installation to ensure proper mechanical fit and sealing.

Q: Why is the D4SL-N series recommended over the obsolete D4GL?

A: The D4SL-N series maintains active product status with extended regulatory approvals (CCC certification added). Active products receive ongoing manufacturer support, documentation, and availability assurance compared to obsolete components.

Q: Are there inventory considerations for these substitutes?

A: D4SL-N3FFG-D has 820 pieces in stock and D4SL-N3FFG-DN has 1,165 pieces in stock, providing adequate availability for production and maintenance requirements.