JD7509DAB Keylock Switch - Equivalent & Substitute Parts

Part Overview

The JD7509DAB is a 4-position keylock switch manufactured by APEM Inc., configured as a DP4T (double-pole, four-throw) circuit with 4A AC rating at 125V. This panel-mount switch features a flat key actuator with gold-plated copper alloy contacts and is designed for applications requiring secure key-controlled position selection. The product is currently obsolete, making identification of compatible substitute parts essential for maintenance, repair, and legacy system support.

Substiute Parts

JD7509DAB

APEM Inc.In Stock: 914JD7509DAB Datasheet

Current PartRFQ

LK69NB126N3

APEM Inc.In Stock: 967LK69NB126N3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LK69NB126N3 qualifies as a direct substitute for the JD7509DAB based on the following critical parameters:

• Circuit Configuration: Both parts are DP4T with 4 positions and On-On-On-On switching function
• Current Rating: Both rated at 4A
• Voltage Rating - AC: Both rated at 125V AC
• Actuator Type: Both feature flat key actuators with all positions key-removable
• Mounting Specification: Both are panel-mount with identical 19.00mm circular cutout diameter
• Termination: Both use solder lug termination
• Contact Material & Finish: Both use gold-plated copper alloy contacts
• Operating Temperature: Both operate across -30°C to 85°C
• Depth Behind Flange: Both measure 27.55mm
• Electrical Life: Both rated at 6,000 cycles
• Compliance: Both are ROHS3 compliant and REACH unaffected

The LK69NB126N3 is manufactured by the same supplier (APEM Inc.) and is currently in active production status, providing long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The LK69NB126N3 is the direct substitute for the obsolete JD7509DAB. Both parts meet identical electrical and mechanical specifications for AC operation at 125V with 4A current capacity. The LK69NB126N3 offers the additional advantage of DC voltage capability (28V), which does not compromise AC-only applications and provides expanded operational flexibility.

The LK69NB126N3 is currently in active production status, ensuring availability for new designs and replacement applications. Both parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The identical panel cutout diameter (19.00mm), depth behind flange (27.55mm), and termination style (solder lug) ensure direct mechanical and electrical compatibility in existing panel installations.

Frequently Asked Questions (FAQ)

Q: Can the LK69NB126N3 directly replace the JD7509DAB in existing applications?

A: Yes. The LK69NB126N3 meets all electrical and mechanical specifications of the JD7509DAB. The identical panel cutout diameter, depth, and solder lug termination enable direct installation without panel modification or rewiring.

Q: What is the difference between the JD7509DAB and LK69NB126N3?

A: The primary difference is product status: the JD7509DAB is obsolete, while the LK69NB126N3 is in active production. The LK69NB126N3 additionally supports 28V DC operation, whereas the JD7509DAB specification lists only AC voltage. Both parts are functionally identical for 125V AC, 4A applications.

Q: Are there packaging differences between these parts?

A: The JD7509DAB is supplied in standard packaging, while the LK69NB126N3 is supplied in bulk packaging. This does not affect electrical or mechanical performance.

Q: Do both parts have the same electrical life rating?

A: Yes. Both the JD7509DAB and LK69NB126N3 are rated for 6,000 electrical cycles.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the key removability specification?

A: Both parts allow key removal in all four positions, enabling secure key control across the full range of switch positions.