BZ-2R5528-S Equivalent & Substitute Parts

Part Overview

The BZ-2R5528-S is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions. This chassis mount switch is rated for 15A AC at 125V with a round pin plunger actuator and screw terminal connections. The product is currently obsolete, necessitating identification of equivalent and substitute components for ongoing applications requiring SPDT snap action switching functionality at comparable electrical ratings.

Substiute Parts

BZ-2R5528-S

Honeywell Sensing and Productivity SolutionsIn Stock: 1067BZ-2R5528-S Datasheet

Current PartRFQ

BZ-2R55-P4-S

Honeywell Sensing and Productivity SolutionsIn Stock: 973BZ-2R55-P4-S Datasheet

DirectRFQ

A-20G

Omron Automation and SafetyIn Stock: 878A-20G Datasheet

SimilarRFQ

Z-01H

Omron Automation and SafetyIn Stock: 906Z-01H Datasheet

SimilarRFQ

Z-01H55

Omron Automation and SafetyIn Stock: 1110Z-01H55 Datasheet

SimilarRFQ

Z-15E

Omron Automation and SafetyIn Stock: 786Z-15E Datasheet

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Z-15G55

Omron Automation and SafetyIn Stock: 981Z-15G55 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZ-2R5528-S is determined by the following critical parameters: circuit configuration (SPDT), switch function (On-Mom), actuator type (round pin plunger), mounting type (chassis mount), and electrical ratings (15A AC at 125V minimum). Substitute parts are grouped into two categories based on compatibility with these core requirements:

Direct Equivalent: Parts maintaining identical electrical ratings, mechanical specifications, and termination compatibility with the original BZ-2R5528-S.

Functional Equivalent: Parts with SPDT configuration and round pin plunger actuation but with variations in current rating, voltage rating, termination style, or operating temperature range. These parts satisfy the core switching function but require verification of application-specific requirements.

The following parameters determine substitution eligibility:

• Circuit type: SPDT required
• Actuator: Round pin plunger required
• Mounting: Chassis mount required
• AC current rating: Minimum 15A
• AC voltage rating: Minimum 125V
• Switch function: On-Mom required

Parameter Comparison

Engineering Selection Recommendations

BZ-2R55-P4-S (Direct Equivalent - Recommended Primary Substitute)

The BZ-2R55-P4-S is the direct equivalent replacement for the obsolete BZ-2R5528-S. Both parts share identical electrical ratings (15A AC at 125V, 500mA DC at 125V), mechanical specifications, and screw terminal termination. The BZ-2R55-P4-S maintains the same operating temperature range (-55°C to 85°C) and mechanical life rating (20,000,000 cycles). The primary distinction is product status: BZ-2R55-P4-S is active with 880 units in stock, whereas BZ-2R5528-S is obsolete. This part requires no application redesign and provides direct pin-for-pin compatibility.

Z-15E and Z-15G55 (Functional Equivalents - Current Rating Match)

The Z-15E and Z-15G55 from Omron maintain the 15A AC current rating and 125V AC voltage rating required by the original application. Both parts feature SPDT configuration with round pin plunger actuation and chassis mount design. However, these parts differ in termination style (solder lug instead of screw terminal), DC voltage rating (30V instead of 125V), and operating temperature range (-25°C to 80°C or -15°C to 80°C instead of -55°C to 85°C). The Z-15G55 provides enhanced ingress protection (IP62) and higher electrical life (500,000 cycles) compared to Z-15E. Selection between these parts requires confirmation that application does not require DC operation above 30V or extended temperature operation below -25°C.

A-20G (Higher Current Rating)

The A-20G from Omron provides 20A AC current capacity, exceeding the 15A requirement of the original part. This part maintains 125V AC voltage rating and SPDT configuration with round pin plunger actuation. The A-20G features solder lug termination and operates within -25°C to 80°C range. DC voltage rating is limited to 30V. This part is suitable for applications where higher AC current capacity provides design margin, provided termination conversion from screw to solder lug is feasible.

Z-01H and Z-01H55 (Low Current Applications Only)

The Z-01H and Z-01H55 are rated for 100mA AC/DC operation, significantly below the 15A AC requirement of the original BZ-2R5528-S. These parts are not suitable for direct substitution in applications requiring 15A AC switching capacity. Selection of these parts is limited to applications where the original specification was incorrectly identified or where circuit redesign reduces current requirements.

All substitute parts listed maintain RoHS compliance status. Parts with ROHS3 designation (A-20G, Z-15G55) include REACH compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can BZ-2R55-P4-S directly replace BZ-2R5528-S without circuit modification?

A: Yes. The BZ-2R55-P4-S is the direct equivalent with identical electrical ratings (15A AC at 125V, 500mA DC at 125V), mechanical specifications, operating temperature range (-55°C to 85°C), and screw terminal termination. No circuit redesign is required.

Q: What is the primary difference between BZ-2R5528-S and BZ-2R55-P4-S?

A: The only significant difference is product status. BZ-2R5528-S is obsolete with limited availability, while BZ-2R55-P4-S is an active product with current manufacturing and inventory support (880 units in stock).

Q: Can Omron Z-15E or Z-15G55 be used as substitutes?

A: These parts can function as substitutes if the application does not require DC operation above 30V or temperature operation below -25°C (Z-15E) or -15°C (Z-15G55). Both parts match the 15A AC at 125V rating. However, termination conversion from screw terminal to solder lug is required. Z-15G55 provides superior ingress protection (IP62) and electrical life (500,000 cycles).

Q: Why do some substitute parts have lower DC voltage ratings?

A: Omron Z-series and A-series parts are rated for 30V DC maximum, compared to the original BZ-2R5528-S rating of 125V DC. Applications requiring DC operation above 30V must use BZ-2R55-P4-S or confirm that DC voltage in the actual circuit does not exceed 30V.

Q: What is the impact of termination style differences?

A: The original BZ-2R5528-S uses screw terminal connections. Omron substitute parts (Z-15E, Z-15G55, A-20G, Z-01H, Z-01H55) use solder lug termination. Circuit board redesign or connector adaptation is required for these substitutes. BZ-2R55-P4-S maintains screw terminal compatibility.

Q: Is the A-20G suitable for the original 15A AC application?

A: Yes, the A-20G is suitable. Its 20A AC rating exceeds the 15A requirement, providing design margin. However, termination conversion from screw to solder lug is required, and DC voltage rating is limited to 30V. Operating temperature range is -25°C to 80°C.

Q: What does IP62 ingress protection on Z-15G55 provide?

A: IP62 rating indicates protection against limited dust ingress and water spray from any direction. The original BZ-2R5528-S and most other substitutes have no specified ingress protection rating. Z-15G55 is suitable for applications requiring environmental protection.

Q: Can Z-01H or Z-01H55 replace BZ-2R5528-S?

A: No. These parts are rated for 100mA AC/DC operation, which is insufficient for applications requiring 15A AC switching. These parts are suitable only for low-current signal switching applications.

Q: What is the mechanical life difference between substitutes?

A: BZ-2R5528-S, BZ-2R55-P4-S, Z-01H, Z-01H55, and Z-15G55 all provide 20,000,000 cycle mechanical life. Z-15E provides 300,000 cycles, and A-20G provides 1,000,000 cycles. Applications with high cycle count requirements should prioritize parts with 20,000,000 cycle ratings.

Q: Are all substitute parts RoHS compliant?

A: Yes. BZ-2R5528-S, BZ-2R55-P4-S, Z-01H, Z-01H55, and Z-15E are RoHS Compliant. A-20G and Z-15G55 are ROHS3 Compliant with REACH documentation. All parts meet current environmental compliance requirements.