Equivalent & Substitute Parts for Honeywell 311SM3-H58

Part Overview

The Honeywell 311SM3-H58 is an active-status snap action switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 250V AC and 30V DC. This chassis-mount switch features a straight lever actuator with quick connect termination and operates across -55°C to 125°C. The part is RoHS compliant and rated for 10,000,000 mechanical cycles. Equivalent and substitute parts are identified when electrical ratings, circuit configuration, mounting type, and mechanical life specifications align within acceptable operational parameters for the intended application.

Substiute Parts

311SM3-H58

Honeywell Sensing and Productivity SolutionsIn Stock: 1128311SM3-H58 Datasheet

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311SM2-H58

Honeywell Sensing and Productivity SolutionsIn Stock: 2193311SM2-H58 Datasheet

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VX-53-1A3

Omron Electronics Inc-EMC DivIn Stock: 2133VX-53-1A3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 311SM3-H58 is determined by strict alignment of the following critical parameters:

Primary Equivalence Criteria:

• Circuit configuration must be SPDT
• Switch function must be On-Mom
• Current rating must be 5A (AC/DC)
• Mounting type must be Chassis Mount
• Actuator type must be Lever, Straight
• Operating temperature range must encompass or match -55°C to 125°C
• Mechanical life must meet or exceed 10,000,000 cycles
• RoHS compliance status must be maintained

Secondary Compatibility Factors:

• Voltage ratings (AC and DC) must not be exceeded in the application
• Termination style compatibility with existing circuit board or connector design
• Packaging format (does not affect electrical function)
• Inventory availability (does not affect technical substitution)

The identified substitute parts are grouped based on their adherence to these criteria. Parts that deviate from critical parameters are noted with specific limitations.

Parameter Comparison

Engineering Selection Recommendations

311SM2-H58 (Honeywell Sensing and Productivity Solutions)

The 311SM2-H58 is a direct functional equivalent to the 311SM3-H58. Both parts share identical electrical ratings (5A, 250V AC, 30V DC), circuit configuration (SPDT), switch function (On-Mom), actuator type (Lever, Straight), mounting method (Chassis Mount), termination style (Quick Connect - 0.058"), operating temperature range (-55°C to 125°C), and mechanical life (10,000,000 cycles). Both maintain RoHS compliance. The primary difference is packaging format (Bulk versus standard). This part is suitable for direct substitution in applications requiring the full 250V AC rating and extended temperature range.

VX-53-1A3 (Omron Electronics Inc-EMC Div)

The VX-53-1A3 shares the core circuit configuration (SPDT), switch function (On-Mom), current rating (5A AC/DC), DC voltage rating (30V), actuator type (Lever, Straight), and mounting type (Chassis Mount) with the 311SM3-H58. However, this part has a reduced AC voltage rating of 125V compared to the 311SM3-H58's 250V AC rating. The operating temperature range is narrower (-25°C to 80°C versus -55°C to 125°C). The termination style differs (Solder and Quick Connect - 0.187" versus Quick Connect - 0.058"). The VX-53-1A3 offers higher mechanical life (50,000,000 cycles) and includes IP40 ingress protection. This part is suitable for substitution only in applications where the AC voltage requirement does not exceed 125V and the operating temperature range remains within -25°C to 80°C.

Compliance Status

All identified substitute parts maintain active product status and regulatory compliance (RoHS or ROHS3). Selection should be based on specific application voltage and temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can the 311SM2-H58 replace the 311SM3-H58 in all applications?

A: Yes. The 311SM2-H58 is electrically and mechanically equivalent to the 311SM3-H58. Both parts have identical voltage ratings (250V AC, 30V DC), current capacity (5A), circuit configuration (SPDT), operating temperature range (-55°C to 125°C), and mechanical life (10,000,000 cycles). The only difference is packaging format, which does not affect electrical performance.

Q: Under what conditions can the VX-53-1A3 substitute for the 311SM3-H58?

A: The VX-53-1A3 can substitute for the 311SM3-H58 only when both of the following conditions are met: (1) the application's AC voltage requirement does not exceed 125V, and (2) the operating temperature remains within -25°C to 80°C. If the application requires 250V AC operation or temperatures below -25°C or above 80°C, the VX-53-1A3 is not suitable.

Q: What is the significance of the different termination styles?

A: The 311SM3-H58 and 311SM2-H58 both use Quick Connect - 0.058" (Round) termination, which is compatible with standard 0.058" round connectors. The VX-53-1A3 uses Solder and Quick Connect - 0.187" (4.7mm) termination, requiring different connector hardware. Termination style compatibility must be verified with the existing circuit board or connector design before substitution.

Q: Does the higher mechanical life of the VX-53-1A3 make it a better choice?

A: The VX-53-1A3 offers 50,000,000 mechanical cycles compared to 10,000,000 cycles for the 311SM3-H58. However, mechanical life is only one factor in component selection. The VX-53-1A3 has reduced voltage and temperature ratings, which may not meet application requirements. Selection should prioritize meeting all electrical and environmental specifications before considering extended mechanical life.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 311SM3-H58 is RoHS Compliant, the 311SM2-H58 is RoHS Compliant, and the VX-53-1A3 is ROHS3 Compliant. All parts meet current regulatory requirements for hazardous substance restrictions.

Q: What is the impact of the IP40 ingress protection rating on the VX-53-1A3?

A: The VX-53-1A3 includes IP40 ingress protection, which provides protection against solid objects larger than 1mm and water spray from any direction. The 311SM3-H58 and 311SM2-H58 do not specify an ingress protection rating. If the application environment requires sealed protection against dust or moisture, the VX-53-1A3 offers this additional feature. If ingress protection is not required, this difference does not affect substitution eligibility.