Equivalent & Substitute Parts for Honeywell 1NT1-1L Toggle Switch

Part Overview

The Honeywell 1NT1-1L is a toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 15A at 125V AC. This panel-mount switch features a locking lever actuator and sealed construction with IP67/IP68 ingress protection. The 1NT1-1L is classified as obsolete product status. Identifying equivalent substitute parts is necessary to ensure continued availability for maintenance, repair, and new design implementations where this switch specification is required.

Substiute Parts

1NT1-1L

Honeywell Sensing and Productivity SolutionsIn Stock: 9281NT1-1L Datasheet

Current PartRFQ

1NT1-1A

Honeywell Sensing and Productivity SolutionsIn Stock: 12201NT1-1A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Honeywell 1NT1-1L toggle switch is based on strict equivalence of electrical and mechanical parameters. The substitute part must satisfy all of the following criteria:

Electrical Parameters (Non-Negotiable):

• Circuit configuration: SPDT
• Current rating: 15A (AC)
• Voltage rating: 125V AC
• Switch function: On-Off-On

Mechanical Parameters (Non-Negotiable):

• Mounting type: Panel Mount
• Actuator type: Locking Lever
• Actuator length: 26.67mm
• Termination style: Screw Terminal
• Panel cutout dimensions: Circular - 12.40mm Dia
• Bushing thread: 15/32-32

Environmental & Compliance Parameters:

• Ingress protection: IP67/IP68
• Operating temperature: -40°C ~ 71°C
• RoHS compliance required

The 1NT1-1A meets all specified parameters and is classified as an active product, making it a direct functional and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Honeywell 1NT1-1A is a direct equivalent substitute for the obsolete 1NT1-1L. Both parts are manufactured by Honeywell Sensing and Productivity Solutions and share identical electrical ratings, mechanical dimensions, and environmental specifications.

Selection Basis:

The 1NT1-1A is recommended as the primary substitute because:

1. Product Status: The 1NT1-1A maintains active product status, ensuring ongoing availability and manufacturer support, whereas the 1NT1-1L is obsolete.

2. Electrical Equivalence: Both parts are rated for 15A at 125V AC with SPDT circuit configuration and On-Off-On switching function.

3. Mechanical Compatibility: Identical panel cutout dimensions (12.40mm circular), bushing thread (15/32-32), actuator type (locking lever), and actuator length (26.67mm) ensure direct mechanical interchangeability in existing panel installations.

4. Environmental & Compliance: Both parts meet IP67/IP68 ingress protection, operate across -40°C to 71°C, and are RoHS compliant with MSL rating of 1.

5. Termination Compatibility: Both use screw terminal connections, maintaining electrical interface consistency.

The 1NT1-1A is suitable for direct replacement in applications where the 1NT1-1L was originally specified.

Frequently Asked Questions (FAQ)

Q: Can the 1NT1-1A be used as a direct replacement for the 1NT1-1L in existing installations?

A: Yes. The 1NT1-1A is mechanically and electrically identical to the 1NT1-1L. Panel cutout dimensions, bushing thread size, actuator configuration, and electrical ratings are identical, enabling direct substitution without panel modification or rewiring.

Q: What is the difference between the 1NT1-1L and 1NT1-1A?

A: The primary difference is product status. The 1NT1-1L is classified as obsolete, while the 1NT1-1A is an active product. All electrical and mechanical specifications are identical. The packaging differs (1NT1-1L uses standard packaging; 1NT1-1A uses bulk packaging), but this does not affect functional performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the 1NT1-1L and 1NT1-1A are RoHS compliant and carry MSL rating 1 (unlimited moisture sensitivity level).

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: SPDT circuit configuration, 15A AC current rating, 125V AC voltage rating, and On-Off-On switch function. Any substitute must match all four parameters.

Q: What are the critical mechanical parameters for panel installation?

A: Critical mechanical parameters include: 12.40mm circular panel cutout diameter, 15/32-32 bushing thread, locking lever actuator type, 26.67mm actuator length, and screw terminal connections. These parameters ensure physical and electrical compatibility with existing panel assemblies.

Q: Is the 1NT1-1A available in stock?

A: According to current inventory data, 1180 pieces of the 1NT1-1A are available as new original stock in bulk packaging.

Q: What is the operating temperature range for both parts?

A: Both the 1NT1-1L and 1NT1-1A operate across -40°C to 71°C, making them suitable for industrial and commercial applications within this thermal envelope.

Q: Do both parts provide sealed construction?

A: Yes. Both parts feature sealed construction with IP67/IP68 ingress protection rating, providing dust-tight and waterproof performance.