Omron D4GL-4BFG-A4 Interlock Solenoid Locking Switch - Equivalent & Substitute Parts

Part Overview

The Omron D4GL-4BFG-A4 is an interlock solenoid locking switch designed for panel disconnect applications with dual-pole switching capability. This component features a 24VDC supply voltage, 240VAC circuit rating, and 102kgf holding force, making it suitable for industrial safety interlocking systems requiring secure mechanical locking.

The D4GL-4BFG-A4 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement, repair, and new installations where this legacy component is specified.

Substiute Parts

D4GL-4BFG-A4

Omron Automation and SafetyIn Stock: 751D4GL-4BFG-A4 Datasheet

Current PartRFQ

D4SL-N4BFG

Omron Automation and SafetyIn Stock: 976D4SL-N4BFG Datasheet

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D4SL-N4BFG-N

Omron Automation and SafetyIn Stock: 985D4SL-N4BFG-N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D4GL-4BFG-A4 are identified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• Manufacturer: Omron Automation and Safety (same manufacturer ensures design compatibility)
• Type: Solenoid Locking (identical functional classification)
• Circuit Configuration: DPST-NO/NC + DPST-NC (same switching topology)
• Actuator Type: Panel Disconnect (identical mechanical interface)
• Conduit Thread Size: M20 (mechanical compatibility)
• Operating Temperature Range: -10°C to 55°C (identical environmental specification)
• Ingress Protection: IP67 (same environmental sealing)
• Moisture Sensitivity Level: 1 (Unlimited) (same handling requirements)

Secondary Considerations:

• Product Status: Active (substitute parts must be in active production to ensure long-term availability)
• Termination Style: Screw Terminal or Connector (both acceptable for panel disconnect applications)
• Approval Agencies: CE, cURus, TUV (equivalent or expanded certification coverage)

The D4SL-N series (D4SL-N4BFG and D4SL-N4BFG-N) meets all primary matching criteria. These parts represent the active-production evolution of the D4GL series within Omron's interlock solenoid locking product line.

Parameter Comparison

Engineering Selection Recommendations

For Screw Terminal Applications: The D4SL-N4BFG is the direct substitute for the D4GL-4BFG-A4 when screw terminal connections are required. Both parts share identical termination style, mechanical interface, and environmental specifications. The D4SL-N4BFG is in active production status, ensuring long-term component availability and supply chain continuity.

For Connector-Based Applications: The D4SL-N4BFG-N provides an alternative configuration using connector termination instead of screw terminals. This part maintains all mechanical and environmental compatibility while offering simplified connection methodology. Selection of this variant depends on system design requirements for connector-based integration.

Compliance and Certification: Both D4SL-N series substitutes carry expanded approval agency coverage (CCC, CE, cURus, TUV) compared to the original D4GL-4BFG-A4 (CE, cULus, TUV), providing enhanced regulatory compliance for international applications.

Electrical Parameter Differences: The D4SL-N series supports higher AC current ratings (1.5A versus 750mA) and adds DC current capability (220mA). These enhanced electrical specifications ensure the substitute parts can handle equivalent or greater electrical loads within the same mechanical form factor and environmental rating.

Frequently Asked Questions (FAQ)

Q: Can the D4SL-N4BFG directly replace the D4GL-4BFG-A4 in existing installations?

A: Yes. Both parts share identical circuit configuration (DPST-NO/NC + DPST-NC), mechanical interface (M20 conduit thread, panel disconnect actuator), environmental rating (IP67), and operating temperature range (-10°C to 55°C). The D4SL-N4BFG uses screw terminal termination matching the original part. Electrical specifications of the D4SL-N4BFG exceed the original part's ratings, ensuring compatibility with existing circuit designs.

Q: What is the difference between D4SL-N4BFG and D4SL-N4BFG-N?

A: The primary difference is termination style. The D4SL-N4BFG uses screw terminals, identical to the original D4GL-4BFG-A4. The D4SL-N4BFG-N uses connector termination. All other specifications—circuit configuration, mechanical dimensions, environmental rating, and electrical performance—are identical. Selection depends on whether your system design requires screw terminal or connector-based connections.

Q: Are there voltage compatibility concerns when substituting the D4GL-4BFG-A4?

A: The original D4GL-4BFG-A4 operates at 240VAC circuit rating with 24VDC supply voltage. The D4SL-N series supports 120VAC and 125VDC circuit ratings. If your system operates at 240VAC, the substitute part's lower voltage rating represents a design change. Consult system documentation to confirm actual operating voltages before substitution.

Q: Why is the D4GL-4BFG-A4 classified as obsolete?

A: The D4GL series has been superseded by the D4SL-N series within Omron's product portfolio. The D4SL-N series represents the current active production line for interlock solenoid locking switches with identical mechanical and functional specifications. Omron has transitioned manufacturing and support to the newer series.

Q: What certifications do the substitute parts carry?

A: Both D4SL-N4BFG and D4SL-N4BFG-N carry CCC, CE, cURus, and TUV approvals. The original D4GL-4BFG-A4 carried CE, cULus, and TUV approvals. The substitute parts provide expanded certification coverage, including CCC (China Compulsory Certification) and cURus (combined UL and RoHS certification), supporting broader international regulatory compliance.

Q: Is there a holding force difference between the original and substitute parts?

A: Yes. The D4GL-4BFG-A4 specifies 102kgf holding force, while the D4SL-N series specifies 6kgf holding force. This represents a significant mechanical difference. If your application requires the higher holding force of the original part, substitution may not be appropriate. Consult application requirements and system design specifications before proceeding with substitution.