Honeywell 11HM1 Equivalent & Substitute Parts Reference

Part Overview

The Honeywell 11HM1 is an SPDT snap action switch with chassis mount configuration, rated for 3A DC at 28V. This hermetically sealed switch features a straight lever actuator and solder lug termination, designed for applications requiring sealed switching in harsh environments. The part is Active status and RoHS Compliant, with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified based on matching circuit topology (SPDT), actuator type (lever, straight), mounting configuration (chassis mount), termination style (solder lug), and functional operation (On-Mom). Substitutes must maintain compatibility with these core mechanical and electrical parameters.

Substiute Parts

11HM1

Honeywell Sensing and Productivity SolutionsIn Stock: 88811HM1 Datasheet

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DB1C-A1LB

ZF ElectronicsIn Stock: 22554DB1C-A1LB Datasheet

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DC2C-A1LB

ZF ElectronicsIn Stock: 1055DC2C-A1LB Datasheet

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DC3C-A1LB

ZF ElectronicsIn Stock: 14413DC3C-A1LB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are qualified based on the following criteria derived from the provided specifications:

Primary Matching Criteria:

• Circuit configuration: SPDT (Single Pole Double Throw)
• Switch function: On-Mom (momentary operation)
• Actuator type: Lever, straight configuration
• Mounting type: Chassis mount
• Termination style: Solder lug
• Product status: Active

Secondary Compatibility Factors:

• Operating temperature range overlap with -65°C to 121°C specification
• Moisture sensitivity level: MSL 1 (Unlimited)
• Regulatory compliance: RoHS and REACH status

The three substitute parts (DB1C-A1LB, DC2C-A1LB, DC3C-A1LB) all match the primary mechanical and functional criteria. Electrical ratings differ based on application requirements; substitution validity depends on the target circuit's voltage and current specifications.

Parameter Comparison

Engineering Selection Recommendations

Mechanical Compatibility: All substitute parts share identical mechanical interfaces: lever straight actuator, chassis mount configuration, and solder lug termination. Physical mounting and actuation are directly compatible with the 11HM1.

Electrical Compatibility Constraints: The 11HM1 operates at 3A DC / 28V DC. Substitute selection must verify that the target application's voltage and current requirements fall within the rated specifications of the chosen substitute:

• DB1C-A1LB: 5A AC / 125V AC or 1A DC / 48V DC
• DC2C-A1LB: 10A AC / 125V AC
• DC3C-A1LB: 100mA AC / 125V AC

Temperature Range Consideration: The 11HM1 specifies -65°C to 121°C operation. All ZF Electronics substitutes operate within -40°C to 120°C. Applications requiring operation below -40°C are not compatible with the substitute parts.

Regulatory Compliance: All parts maintain MSL 1 (Unlimited) moisture sensitivity and Active product status. The 11HM1 is RoHS Compliant; substitutes are ROHS3 Compliant. Both compliance levels are acceptable for equivalent substitution.

Ingress Protection: The 11HM1 specifies hermetically sealed construction. DB1C-A1LB provides IP50 (dust protected); DC2C-A1LB and DC3C-A1LB provide IP67 (dust tight, waterproof). Enhanced sealing in substitutes does not prevent compatibility.

Frequently Asked Questions (FAQ)

Q: Can DB1C-A1LB directly replace 11HM1 in a 28V DC circuit?

A: No. DB1C-A1LB is rated 1A DC maximum at 48V DC. The 11HM1 operates at 3A DC / 28V DC. DB1C-A1LB cannot handle the 3A current requirement and is not suitable for this application.

Q: Are the ZF Electronics substitutes compatible with the 11HM1 mounting footprint?

A: Yes. All three ZF Electronics parts (DB1C-A1LB, DC2C-A1LB, DC3C-A1LB) share identical mechanical specifications: chassis mount configuration, lever straight actuator, and solder lug termination. Physical installation is directly compatible.

Q: What is the primary difference between the three ZF Electronics substitutes?

A: The substitutes differ in current and voltage ratings. DB1C-A1LB is rated 5A AC / 125V AC (1A DC / 48V DC). DC2C-A1LB is rated 10A AC / 125V AC. DC3C-A1LB is rated 100mA AC / 125V AC. Selection depends on the target circuit's electrical requirements, not mechanical compatibility.

Q: Can I use a substitute in an application requiring -65°C operation?

A: No. The 11HM1 operates from -65°C to 121°C. All ZF Electronics substitutes operate from -40°C to 120°C. Applications requiring operation below -40°C require the original 11HM1 or an alternative part with extended low-temperature rating.

Q: Are all parts RoHS compliant?

A: Yes. The 11HM1 is RoHS Compliant. All three ZF Electronics substitutes are ROHS3 Compliant. Both compliance levels satisfy RoHS requirements for equivalent substitution.

Q: What is the difference between hermetically sealed (11HM1) and IP67 (DC2C-A1LB, DC3C-A1LB)?

A: Hermetically sealed indicates a sealed enclosure with no external moving parts exposed. IP67 indicates dust tight and waterproof construction. Both provide environmental protection; IP67 is a standardized ingress protection rating. The 11HM1's hermetic sealing is more restrictive than IP67 specification.

Q: Can I substitute 11HM1 with DC3C-A1LB in a 3A DC circuit?

A: No. DC3C-A1LB is rated 100mA AC maximum. It cannot handle 3A DC current and is not suitable for this application.

Q: Are the operating force and travel specifications identical across all parts?

A: No. Operating force, pretravel, differential travel, and overtravel specifications vary among the parts. These mechanical parameters are provided in the detailed specifications but do not prevent mechanical substitution if the actuator interface is compatible. Verify that the application's actuation requirements are met by the substitute's mechanical characteristics.