LSYMB7N3-1A Equivalent & Substitute Parts

Part Overview

The LSYMB7N3-1A is a snap action DPDT (double pole double throw) switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis-mounted switch is rated for 10A AC at 120V and 800mA DC at 115V, featuring a side rotary roller actuator with nylon roller and front-mounted configuration. The part operates across a temperature range of -40°C to 121°C with Mom-Off-Mom switch function and screw terminal termination.

The LSYMB7N3-1A is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

LSYMB7N3-1A

Honeywell Sensing and Productivity SolutionsIn Stock: 1048LSYMB7N3-1A Datasheet

Current PartRFQ

LSYMB4N-2K

Honeywell Sensing and Productivity SolutionsIn Stock: 887LSYMB4N-2K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LSYMB7N3-1A is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be DPDT (DB/DM)
• Switch function must be Mom-Off-Mom
• Current rating must support minimum 10A AC and 800mA DC
• Voltage ratings must meet or exceed 120V AC and 115V DC

Mechanical Compatibility Requirements:

• Actuator type must be side rotary with roller mechanism
• Mounting type must be chassis mount
• Termination style must be screw terminal
• Operating force must be 46gfm
• Travel specifications (pretravel 18°, differential travel 10°, overtravel 57°) must match

Environmental & Compliance Requirements:

• Operating temperature range must encompass -40°C to 121°C
• RoHS compliance status must be maintained
• Moisture sensitivity level must be 1 (Unlimited)

Substitute parts must match all parameters listed above. Parts from the same manufacturer series (HDLS) with identical electrical and mechanical specifications are eligible for substitution.

Parameter Comparison

Engineering Selection Recommendations

The LSYMB4N-2K is a direct functional equivalent to the LSYMB7N3-1A. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series and share identical electrical, mechanical, and environmental specifications.

Primary Selection Advantage: The LSYMB4N-2K maintains active product status, whereas the LSYMB7N3-1A is classified as obsolete. This distinction is significant for long-term supply chain planning and component availability. Selection of the LSYMB4N-2K ensures access to current manufacturing inventory and ongoing vendor support.

Compliance Alignment: Both parts maintain RoHS compliance and identical moisture sensitivity ratings. No compliance-related constraints exist for substitution.

Inventory Consideration: Current inventory availability shows LSYMB4N-2K at 859 pieces in stock, supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the LSYMB4N-2K directly replace the LSYMB7N3-1A in existing designs?

A: Yes. The LSYMB4N-2K is electrically and mechanically equivalent to the LSYMB7N3-1A. All critical parameters—circuit configuration, current and voltage ratings, actuator type, mounting configuration, termination style, and operating specifications—are identical. Direct substitution is supported without design modification.

Q: What is the significance of the product status difference between these parts?

A: The LSYMB7N3-1A is classified as obsolete, indicating discontinued manufacturing and limited future availability. The LSYMB4N-2K maintains active status, confirming current production and ongoing vendor support. For new designs or long-term production requirements, the LSYMB4N-2K is the appropriate selection.

Q: Are the mechanical mounting dimensions identical between these parts?

A: Both parts share identical mounting type (chassis mount) and actuator configuration (side rotary roller). The provided parameters confirm equivalence in all specified mechanical characteristics. Detailed dimensional drawings should be consulted for specific mounting hole patterns and clearance requirements.

Q: Do these parts require different termination procedures?

A: No. Both parts utilize screw terminal termination. Connection procedures and wire gauge requirements are identical.

Q: Are there any environmental operating differences between these parts?

A: No. Both parts operate across the identical temperature range of -40°C to 121°C and maintain the same moisture sensitivity level (MSL 1, Unlimited). Environmental performance is equivalent.

Q: What is the basis for confirming substitution compatibility?

A: Substitution compatibility is established through direct parameter matching across all electrical specifications (circuit type, current and voltage ratings, switch function), mechanical specifications (actuator type, mounting, termination, operating force, travel characteristics), and environmental ratings (temperature range, moisture sensitivity, RoHS compliance). All parameters match exactly between the LSYMB7N3-1A and LSYMB4N-2K.