SL1-DK Equivalent & Substitute Parts Reference

Part Overview

The Honeywell SL1-DK is an SPDT snap-action switch designed for panel mount applications with 100mA rated current at 125V AC and 30V DC. This switch features a cross roller plunger actuator, screw terminal connections, and IP67 ingress protection suitable for dust-tight and waterproof environments. The product is Active status and RoHS Compliant, with 817 units currently in stock.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and environmental ratings can be maintained within the allowed parameter specifications for this switch category.

Substiute Parts

SL1-DK

Honeywell Sensing and Productivity SolutionsIn Stock: 854SL1-DK Datasheet

Current PartRFQ

ZC-Q2155

Omron Automation and SafetyIn Stock: 745ZC-Q2155 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Omron ZC-Q2155 is identified as an equivalent substitute based on the following allowed substitution criteria:

Matching Parameters:

• Circuit configuration: Both SPDT
• Switch function: Both On-Momentary
• Voltage rating (AC): Both 125V
• Voltage rating (DC): Both 30V
• Mounting type: Both Panel Mount
• Termination style: Both Screw Terminal
• Ingress protection: Both IP67
• Operating force: Both 1200gf
• Release force: Both 500gf
• Pretravel: Both 0.060" (1.5mm)
• Overtravel: Both 0.118" (3.0mm)
• RoHS compliance: Both compliant
• MSL rating: Both Level 1 (Unlimited)

Differing Parameters (Within Acceptable Variance):

• Current rating: ZC-Q2155 rated 10A AC / 6A DC (exceeds SL1-DK 100mA requirement)
• Operating position: ZC-Q2155 1.866" vs SL1-DK 1.235" (mechanical envelope difference)
• Differential travel: ZC-Q2155 0.008" vs SL1-DK 0.004" (minor tolerance variance)
• Operating temperature: ZC-Q2155 -10°C to 80°C vs SL1-DK -10°C to 70°C (extended range)

The ZC-Q2155 provides higher current capacity and extended temperature range, making it suitable for applications where the SL1-DK is unavailable while maintaining circuit compatibility and environmental protection requirements.

Parameter Comparison

Engineering Selection Recommendations

SL1-DK Selection Criteria:

• Primary application requirement: 100mA maximum current at 125V AC or 30V DC
• Compact operating position (1.235" stroke) required for space-constrained panel mount installations
• Operating temperature range -10°C to 70°C sufficient for application environment
• RoHS Compliant status meets regulatory requirements
• Active product status with 817 units in stock ensures supply availability

ZC-Q2155 Selection Criteria:

• Application requires current capacity exceeding 100mA (up to 10A AC / 6A DC)
• Extended operating temperature range (-10°C to 80°C) required
• Longer operating position (1.866" stroke) acceptable for mechanical design
• ROHS3 Compliant status meets current regulatory requirements
• Active product status with 714 units in stock
• Electrical life specification (500,000 cycles) and mechanical life specification (10,000,000 cycles) provided for lifecycle planning

Both parts maintain equivalent circuit functionality (SPDT), voltage ratings (125V AC / 30V DC), panel mount configuration, screw terminal termination, and IP67 environmental protection. Selection between these parts depends on current capacity requirements and available panel mounting space.

Frequently Asked Questions (FAQ)

Q: Can the ZC-Q2155 directly replace the SL1-DK in all applications?

A: The ZC-Q2155 provides electrical and environmental equivalence for SPDT switching at 125V AC and 30V DC. However, the longer operating position (1.866" vs 1.235") requires verification that panel mounting space accommodates the increased stroke length. Current capacity differences (10A vs 100mA) do not prevent substitution in lower-current applications.

Q: What is the significance of the different actuator types (Cross Roller Plunger vs Roller Plunger)?

A: Both actuator types provide momentary switching action with equivalent operating and release forces (1200gf and 500gf respectively). The cross roller configuration in the SL1-DK and standard roller plunger in the ZC-Q2155 represent design variations between manufacturers but maintain functional compatibility for panel-mounted switching applications.

Q: Are there packaging or inventory considerations for substitution?

A: Both parts are supplied in Bulk packaging. SL1-DK inventory is 817 units and ZC-Q2155 inventory is 714 units. Packaging format is equivalent between both parts.

Q: How do the temperature operating ranges affect substitution decisions?

A: The SL1-DK operates from -10°C to 70°C while the ZC-Q2155 operates from -10°C to 80°C. If the application environment exceeds 70°C, the ZC-Q2155 is required. For applications within -10°C to 70°C, both parts are suitable.

Q: What compliance certifications apply to each part?

A: SL1-DK is RoHS Compliant. ZC-Q2155 is ROHS3 Compliant and REACH Affected. Both parts carry EAR99 ECCN classification and identical HTSUS code (8536.50.9055). For applications requiring REACH compliance documentation, the ZC-Q2155 provides explicit REACH Affected status.

Q: Does the differential travel variance (0.004" vs 0.008") affect circuit performance?

A: Both differential travel specifications fall within standard mechanical tolerances for snap-action switches. The variance does not affect SPDT circuit switching performance or electrical characteristics at the specified voltage and current ratings.