SZL-VL-A Equivalent & Substitute Parts Reference

Part Overview

The SZL-VL-A is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with screw terminal connections. This component features a side rotary roller actuator and is rated for 5A AC at 250V and 400mA DC at 125V operation. The product is classified as obsolete, necessitating identification of active equivalent alternatives to maintain system functionality and ensure continued component availability for maintenance and new installations.

Substiute Parts

SZL-VL-A

Honeywell Sensing and Productivity SolutionsIn Stock: 1141SZL-VL-A Datasheet

Current PartRFQ

SZL-VL-S-A-N-M

Honeywell Sensing and Productivity SolutionsIn Stock: 1261SZL-VL-S-A-N-M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SZL-VL-A with the SZL-VL-S-A-N-M is based on the following alignment criteria:

Compatible Parameters:

• Identical circuit configuration: SPDT (DB/DM)
• Identical switch function: On-Mom
• Identical actuator type: Side Rotary, Roller
• Identical mounting type: Chassis Mount
• Identical termination style: Screw Terminal
• Same manufacturer: Honeywell Sensing and Productivity Solutions
• Same base product series: SZL-VL

Differing Parameters Requiring Application Review:

• Current rating: SZL-VL-A rated 5A AC / 400mA DC; SZL-VL-S-A-N-M rated 500mA AC / 50mA DC
• Voltage rating: SZL-VL-A rated 250V AC / 125V DC; SZL-VL-S-A-N-M rated 380V AC / 220V DC
• Ingress protection: SZL-VL-A rated IP64; SZL-VL-S-A-N-M rated IP67
• Operating temperature: SZL-VL-A rated -20°C to 60°C; SZL-VL-S-A-N-M rated -20°C to 70°C
• Mechanical life: Both rated 10,000,000 cycles
• Product status: SZL-VL-A is obsolete; SZL-VL-S-A-N-M is active

The SZL-VL-S-A-N-M maintains the core switching architecture and mechanical interface of the SZL-VL-A while offering enhanced environmental protection and extended temperature range. However, the reduced current and voltage ratings require verification against application load specifications.

Parameter Comparison

Engineering Selection Recommendations

The SZL-VL-S-A-N-M is the active equivalent for the obsolete SZL-VL-A within the Honeywell SZL-VL product family. Both components are RoHS compliant and manufactured by the same supplier, ensuring regulatory alignment and supply chain continuity.

Selection of the SZL-VL-S-A-N-M requires confirmation that application load specifications do not exceed 500mA AC or 50mA DC, as these ratings are substantially lower than the original SZL-VL-A. The enhanced ingress protection rating (IP67 versus IP64) and extended operating temperature range (-20°C to 70°C versus -20°C to 60°C) provide improved environmental performance characteristics.

For applications requiring the full 5A AC or 400mA DC current capacity of the original SZL-VL-A, alternative snap action SPDT switches from the Honeywell portfolio or other manufacturers must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the SZL-VL-S-A-N-M directly replace the SZL-VL-A in all applications?

A: Direct replacement is possible only when application current requirements do not exceed 500mA AC or 50mA DC. The SZL-VL-A is rated for 5A AC and 400mA DC. Applications operating at higher current levels require alternative component selection.

Q: What are the key mechanical compatibility factors between these parts?

A: Both components share identical actuator type (side rotary roller), mounting configuration (chassis mount), and termination method (screw terminal). Mechanical interface compatibility is confirmed. Electrical load compatibility must be independently verified.

Q: How do the environmental ratings differ?

A: The SZL-VL-S-A-N-M provides IP67 protection (dust tight, waterproof) compared to the SZL-VL-A's IP64 rating (dust tight, water resistant). The substitute also operates across an extended temperature range of -20°C to 70°C versus -20°C to 60°C for the original part.

Q: What is the packaging difference?

A: The SZL-VL-A is supplied with unspecified packaging, while the SZL-VL-S-A-N-M is supplied in bulk packaging. Procurement quantities and handling procedures may differ accordingly.

Q: Are both parts RoHS compliant?

A: Yes, both the SZL-VL-A and SZL-VL-S-A-N-M are RoHS compliant, ensuring regulatory alignment for applications subject to RoHS requirements.

Q: What is the mechanical life expectancy?

A: Both components are rated for 10,000,000 mechanical cycles, providing equivalent operational longevity under normal switching conditions.