BZ-RX47 Equivalent & Substitute Parts Reference

Part Overview

The Honeywell BZ-RX47 is a snap action SPDT switch with 15A AC and 500mA DC current rating at 125V, featuring a round pin plunger actuator and chassis mount configuration with solder lug termination. The product is classified as obsolete, making equivalent substitute parts necessary for ongoing applications and new designs requiring similar electrical and mechanical characteristics.

Key Parameters

Parameter	BZ-RX47 Value
Circuit Configuration	SPDT
Current Rating (AC)	15A
Current Rating (DC)	500mA
Voltage Rating (AC)	125V
Voltage Rating (DC)	125V
Actuator Type	Round (Pin Plunger)
Mounting Type	Chassis Mount
Termination Style	Solder Lug
Switch Function	On-On
Operating Position	0.625" (15.9mm)
Operating Temperature Range	-55°C to 85°C
Mechanical Life	20,000,000 Cycles
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the BZ-RX47 is determined by the following critical parameters:

Primary Compatibility Criteria:

Circuit configuration must be SPDT
Actuator type must be round pin plunger
Mounting type must be chassis mount
Termination style must be solder lug
Voltage rating (AC) must be 125V minimum
Operating position must be 0.625" (15.9mm)

Secondary Compatibility Considerations:

Current rating (AC) of 15A or higher acceptable for direct replacement
Current rating (DC) of 500mA or higher acceptable for direct replacement
Operating temperature range must encompass application requirements
Mechanical life of 20,000,000 cycles or higher preferred for equivalent durability

The substitute parts listed below meet the primary compatibility criteria. Variations in secondary parameters reflect different product series and feature sets within the Omron Automation and Safety portfolio.

Parameter Comparison

Parameter	BZ-RX47	Z-15H2	Z-01H55	A-20G	Z-15ER	Z-15E	Z-15G	Z-15G55
Manufacturer	Honeywell	Omron	Omron	Omron	Omron	Omron	Omron	Omron
Circuit	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT
Switch Function	On-On	On-Mom	On-Mom	On-Mom	On-On	On-Mom	On-Mom	On-Mom
Current Rating (AC)	15A	10A	100mA	20A	15A	15A	15A	15A
Current Rating (DC)	500mA	2A	100mA	6A	15A	15A	6A	6A
Voltage Rating (AC)	125V	125V	125V	125V	125V	125V	125V	125V
Voltage Rating (DC)	125V	30V	30V	30V	30V	30V	30V	30V
Actuator Type	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)	Round (Pin Plunger)
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Solder Lug	Solder Lug	Solder Lug	Solder Lug	Solder Lug	Solder Lug	Solder Lug	Solder Lug
Operating Position	0.625" (15.9mm)	0.625" (15.9mm)	0.625" (15.9mm)	0.640" (16.3mm)	0.625" (15.9mm)	0.625" (15.9mm)	0.625" (15.9mm)	0.625" (15.9mm)
Operating Temperature Range	-55°C to 85°C	-25°C to 80°C	-15°C to 80°C	-25°C to 80°C	-25°C to 80°C	-25°C to 80°C	-25°C to 80°C	-15°C to 80°C
Mechanical Life	20,000,000 Cycles	20,000,000 Cycles	20,000,000 Cycles	1,000,000 Cycles	300,000 Cycles	300,000 Cycles	20,000,000 Cycles	20,000,000 Cycles
Ingress Protection	Not specified	IP00	IP62	IP00	IP00	IP00	IP00	IP62
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement Candidates (Highest Compatibility):

Z-15ER and Z-15E are the closest functional equivalents to the BZ-RX47. Both maintain 15A AC current rating, 125V AC voltage rating, identical operating position of 0.625" (15.9mm), and round pin plunger actuator with chassis mount solder lug termination. Z-15ER specifically matches the On-On switch function of the BZ-RX47. Both parts are active products with RoHS compliance, ensuring long-term availability and regulatory alignment.

Alternative Candidates (Acceptable with Parameter Verification):

Z-15G and Z-15G55 provide 15A AC current rating and maintain all primary mechanical compatibility criteria. Z-15G55 offers enhanced ingress protection (IP62) compared to the standard Z-15G (IP00), suitable for applications requiring sealed operation. Both parts feature 20,000,000 mechanical life cycles, matching the BZ-RX47 durability specification.

Limited Compatibility (Current Rating Constraints):

Z-15H2 meets mechanical and electrical compatibility for AC applications at 10A, which is below the BZ-RX47 15A AC rating. This part is suitable only for applications where the actual current requirement does not exceed 10A AC. Z-01H55 is limited to 100mA AC/DC operation and is not suitable for the BZ-RX47 application profile.

Not Recommended:

A-20G exhibits a 0.640" (16.3mm) operating position, which deviates from the BZ-RX47 specification of 0.625" (15.9mm). Additionally, mechanical life is specified at 1,000,000 cycles, significantly below the BZ-RX47 20,000,000 cycle rating.

Compliance Considerations:

All substitute parts maintain RoHS compliance. Z-15ER, Z-15E, Z-15G, and Z-15G55 are active products with established supply chains. Selection should prioritize active product status to ensure long-term component availability and support.

Frequently Asked Questions (FAQ)

Q: Can Z-15H2 directly replace the BZ-RX47?

A: Z-15H2 is mechanically compatible but has a reduced AC current rating of 10A compared to the BZ-RX47 15A specification. Use Z-15H2 only if the application current requirement does not exceed 10A AC.

Q: What is the difference between Z-15E and Z-15ER?

A: Both parts share identical electrical ratings (15A AC, 15A DC at 125V AC / 30V DC) and mechanical specifications. The primary difference is switch function: Z-15E is On-Mom (momentary), while Z-15ER is On-On (maintained). Select based on the required switch behavior for your application.

Q: Why do substitute parts show 30V DC rating instead of 125V DC like the BZ-RX47?

A: The Omron substitute parts are rated for 30V DC maximum, which is a standard specification for this product category. If your application requires 125V DC operation, verify that the actual DC voltage in your circuit does not exceed 30V before selecting a substitute.

Q: Is Z-15G55 better than Z-15G for all applications?

A: Z-15G55 provides IP62 ingress protection and operates across -15°C to 80°C temperature range, compared to Z-15G with IP00 protection and -25°C to 80°C range. Z-15G55 is superior for sealed or moisture-exposed environments. Z-15G is suitable for standard indoor applications and offers wider low-temperature operation down to -25°C.

Q: What does the operating position specification mean for substitution?

A: Operating position defines the plunger travel distance required to actuate the switch. The BZ-RX47 requires 0.625" (15.9mm) travel. Most substitutes match this specification exactly. A-20G at 0.640" (16.3mm) requires slightly more travel and may not be compatible with mechanical linkages designed for 0.625" actuation.

Q: Are all substitute parts available in the same packaging as the BZ-RX47?

A: Packaging varies among substitutes. Z-15G is supplied in Tray packaging, while Z-15H2, Z-01H55, Z-15ER, Z-15E, and Z-15G55 are supplied in Bulk packaging. A-20G is supplied in Bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Which substitute offers the longest mechanical life?

A: Z-15G, Z-15G55, Z-15H2, and Z-01H55 all specify 20,000,000 mechanical life cycles, matching the BZ-RX47. Z-15E and Z-15ER are rated for 300,000 cycles, and A-20G for 1,000,000 cycles. For applications requiring extended operational life, select parts with 20,000,000 cycle ratings.

Q: Can I use A-20G as a substitute if my application only requires 10A AC?

A: A-20G has a 0.640" (16.3mm) operating position versus the BZ-RX47 0.625" (15.9mm) specification. This dimensional difference may cause mechanical incompatibility with existing actuator linkages. Additionally, A-20G mechanical life (1,000,000 cycles) is significantly lower than the BZ-RX47 (20,000,000 cycles). Z-15H2 is a more appropriate choice for reduced current applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message