Equivalent & Substitute Parts for Honeywell 1NT887-3 Toggle Switch

Part Overview

The Honeywell 1NT887-3 is a toggle switch with Single Pole Double Throw (SPDT) configuration, rated for 15A at 125V AC. This panel-mount switch features a sealed design with IP67/IP68 ingress protection and operates across a temperature range of -40°C to 71°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity and ensure long-term component availability for new designs and field replacements.

Substiute Parts

1NT887-3

Honeywell Sensing and Productivity SolutionsIn Stock: 9431NT887-3 Datasheet

Current PartRFQ

1TL1-3

Honeywell Sensing and Productivity SolutionsIn Stock: 201621TL1-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 1NT887-3 with the Honeywell 1TL1-3 is based on electrical and mechanical parameter equivalence. Both parts maintain identical circuit configuration (SPDT), switch function (On-On), current rating (15A AC), and voltage rating (125V AC). The mechanical interface parameters are preserved: both feature panel mount configuration with 12.40mm circular cutout diameter and 15/32-32 bushing thread, enabling direct mechanical compatibility. Termination style (screw terminal) and illumination characteristics (non-illuminated) are identical across both parts.

The substitution is valid based on the following key parameters:

• Electrical ratings: 15A AC, 125V AC
• Circuit topology: SPDT On-On configuration
• Mechanical interface: Panel mount with standardized cutout and bushing dimensions
• Environmental sealing: Both sealed designs
• Termination: Screw terminal connection
• Actuator: Standard round type

Parameter Comparison

Engineering Selection Recommendations

The Honeywell 1TL1-3 is the direct substitute for the obsolete 1NT887-3 toggle switch. Selection of the 1TL1-3 is supported by the following engineering factors:

Product Status: The 1TL1-3 maintains active product status, ensuring continued availability and manufacturer support, whereas the 1NT887-3 is obsolete.

Electrical Equivalence: Both parts are rated identically at 15A AC and 125V AC with SPDT On-On configuration, providing direct functional replacement without circuit redesign.

Mechanical Compatibility: Identical panel mount interface specifications (12.40mm cutout diameter, 15/32-32 bushing thread, screw terminal termination) enable direct mechanical substitution without panel modifications.

Compliance: The 1TL1-3 meets ROHS3 compliance and maintains EAR99 export classification identical to the original part. Both parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Environmental Performance: The 1TL1-3 extends the lower operating temperature limit to -65°C compared to the 1NT887-3 at -40°C, providing enhanced performance in cold environments while maintaining the upper limit at 71°C.

Actuator Dimension Variance: The actuator length differs by 0.25mm (1TL1-3 at 17.27mm versus 1NT887-3 at 17.02mm). This minor dimensional difference does not affect functional operation or panel interface compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 1TL1-3 directly replace the 1NT887-3 in existing applications?

A: Yes. The 1TL1-3 provides direct electrical and mechanical substitution. Both parts share identical electrical ratings (15A AC, 125V AC), circuit configuration (SPDT On-On), and mechanical interface specifications (panel mount with 12.40mm cutout, 15/32-32 bushing thread, screw terminals). No circuit modifications or panel rework are required.

Q: What is the significance of the actuator length difference between the two parts?

A: The actuator length difference of 0.25mm (1NT887-3 at 17.02mm, 1TL1-3 at 17.27mm) is within normal manufacturing tolerance and does not affect functional operation, panel mounting, or user interface compatibility. Both actuators are standard round type with identical engagement characteristics.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are RoHS compliant. The 1NT887-3 carries RoHS Compliant status, while the 1TL1-3 carries ROHS3 Compliant status, representing an updated compliance standard. Both maintain identical ECCN (EAR99) and HTSUS (8536.50.9065) classifications. The 1TL1-3 is additionally noted as REACH Affected.

Q: Does the extended temperature range of the 1TL1-3 affect its suitability as a substitute?

A: No. The 1TL1-3 extends the lower operating temperature limit to -65°C compared to the 1NT887-3 at -40°C. This represents an enhancement in environmental capability. Both parts maintain the same upper temperature limit of 71°C. The extended range does not introduce incompatibility; it provides additional operational margin.

Q: What is the difference between IP67/IP68 and Environment Sealed designations?

A: The 1NT887-3 specifies IP67/IP68 (Dust Tight, Waterproof) ingress protection rating. The 1TL1-3 specifies Environment Sealed. Both designations indicate sealed construction suitable for harsh environments. The specific IP rating difference does not affect substitution validity for applications requiring sealed switch operation.

Q: Are packaging differences relevant to component selection?

A: The 1NT887-3 is supplied with unspecified packaging, while the 1TL1-3 is supplied in Bulk packaging. Packaging differences do not affect electrical or mechanical performance. Component selection should be based on electrical and mechanical parameters; packaging selection depends on procurement and inventory management requirements.

Q: What inventory considerations apply to this substitution?

A: The 1NT887-3 has 931 pieces in stock (obsolete status). The 1TL1-3 has 20,099 pieces in stock (active status). For new designs and long-term supply chain planning, the 1TL1-3 is the appropriate selection due to active product status and significantly higher inventory availability.