Honeywell 8AC27 SPDT x4 Snap Action Switch Equivalent & Substitute Parts

Part Overview

The Honeywell 8AC27 is a snap action switch featuring four independent SPDT (Single Pole Double Throw) circuits rated for 5A at 250V AC or 30V DC. The switch employs a push-pull plunger actuator and is designed for chassis mount applications with solder lug termination. The 8AC27 is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

8AC27

Honeywell Sensing and Productivity SolutionsIn Stock: 10538AC27 Datasheet

Current PartRFQ

8AC1

Honeywell Sensing and Productivity SolutionsIn Stock: 9858AC1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 8AC27 is based on electrical and mechanical parameter equivalence. The substitute part must satisfy the following criteria:

Electrical Parameters:

• Circuit configuration: SPDT x 4
• Current rating: 5A (AC/DC)
• Voltage rating: 250V AC / 30V DC
• Switch function: On-Momentary

Mechanical Parameters:

• Actuator type: Push-Pull Plunger
• Mounting type: Chassis Mount
• Termination style: Solder Lug
• Operating position: 0.203" (5.2mm)
• Overtravel: 0.125" (3.2mm)
• Operating temperature range: -53°C to 121°C

Compliance Parameters:

• RoHS Compliant
• Moisture Sensitivity Level 1

The Honeywell 8AC1 meets all specified electrical, mechanical, and compliance requirements and is classified as an active product, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Honeywell 8AC1 is the direct equivalent for the obsolete 8AC27. Both components are manufactured by Honeywell Sensing and Productivity Solutions and share identical electrical ratings, mechanical specifications, and compliance certifications. The 8AC1 is currently in active production status with confirmed inventory availability (883 pieces in stock), ensuring supply chain continuity.

The 8AC1 maintains full compatibility with existing designs specified for the 8AC27. No circuit modifications, PCB layout changes, or mechanical redesign are required for substitution. Both components are RoHS Compliant and carry Moisture Sensitivity Level 1 classification, meeting current environmental and reliability standards.

For new designs or production restarts, the 8AC1 should be specified as the primary component. For existing systems currently using the 8AC27, direct replacement with the 8AC1 is supported without functional or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the 8AC1 be used as a direct replacement for the 8AC27 in existing applications?

A: Yes. The 8AC1 is electrically and mechanically identical to the 8AC27. All electrical ratings (5A at 250V AC / 30V DC), circuit configuration (SPDT x 4), actuator type (push-pull plunger), mounting method (chassis mount), and termination style (solder lug) are identical. No circuit modifications or mechanical changes are required.

Q: What is the primary reason for substituting the 8AC27?

A: The 8AC27 is classified as obsolete. The 8AC1 is the active equivalent component currently manufactured and stocked by Honeywell Sensing and Productivity Solutions, ensuring ongoing availability for production and field service applications.

Q: Are there any compliance or certification differences between the 8AC27 and 8AC1?

A: No. Both components are RoHS Compliant and carry identical Moisture Sensitivity Level 1 classification. Both are assigned ECCN EAR99 and HTSUS 8536.50.7000 codes.

Q: What is the difference in packaging between these components?

A: The 8AC27 was supplied with unspecified packaging, while the 8AC1 is supplied in bulk packaging. Packaging differences do not affect component functionality or electrical performance.

Q: Are both components from the same manufacturer?

A: Yes. Both the 8AC27 and 8AC1 are manufactured by Honeywell Sensing and Productivity Solutions and belong to the AC series of snap action switches.

Q: What are the key electrical parameters that define substitution compatibility?

A: The critical parameters are circuit configuration (SPDT x 4), current rating (5A AC/DC), voltage ratings (250V AC / 30V DC), and switch function (On-Momentary). The 8AC1 matches all of these specifications.

Q: What are the key mechanical parameters that define substitution compatibility?

A: The critical parameters are actuator type (push-pull plunger), mounting type (chassis mount), termination style (solder lug), operating position (0.203" / 5.2mm), overtravel (0.125" / 3.2mm), and operating temperature range (-53°C to 121°C). The 8AC1 matches all of these specifications.