MB2085SS1W01-BA Equivalent & Substitute Parts

Part Overview

The MB2085SS1W01-BA is a DPDT pushbutton switch manufactured by NKK Switches, rated for 6A at 125V AC and 3A at 30V DC. This component features a standard panel mount configuration with rear termination and solder lug connections. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and new design implementations where this switch specification remains applicable.

Substiute Parts

MB2085SS1W01-BA

NKK SwitchesIn Stock: 735MB2085SS1W01-BA Datasheet

Current PartRFQ

8261S1HZQE2

C&KIn Stock: 8778261S1HZQE2 Datasheet

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8261SHZQE2

C&KIn Stock: 8058261SHZQE2 Datasheet

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8261SHZQE4

C&KIn Stock: 9688261SHZQE4 Datasheet

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MPA206N

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1576MPA206N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MB2085SS1W01-BA is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: DPDT
• Switch function: On-On
• Current rating: 6A minimum (AC)
• Voltage rating: 125V AC minimum
• Mounting type: Panel Mount, Rear
• Termination style: Solder Lug
• Panel cutout diameter: 6.35mm or 6.50mm (compatible with standard panel openings)

Secondary Considerations:

• Operating temperature range overlap
• Electrical life rating
• RoHS and REACH compliance status
• Actuator type compatibility with existing mechanical interfaces

The substitute parts listed below meet the primary compatibility criteria. Variations in DC current ratings, operating temperature ranges, and electrical life cycles are noted where they differ from the original specification.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are ROHS3 compliant and sourced from active product lines, ensuring long-term availability and supply chain stability compared to the obsolete MB2085SS1W01-BA.

C&K 8261 Series (8261S1HZQE2, 8261SHZQE2, 8261SHZQE4): These parts meet all primary electrical and mechanical compatibility criteria. The C&K switches provide extended electrical life (50,000 cycles versus 25,000 cycles) and are available in both tray and bulk packaging. The 8261SHZQE4 variant features an orange actuator cap, while 8261S1HZQE2 and 8261SHZQE2 provide black actuators matching the original. Operating temperature range is reduced to -30°C to 65°C; applications requiring operation above 65°C should be evaluated against actual system requirements.

TE Connectivity MPA206N: This substitute provides voltage and current ratings matching or exceeding the original specification (125V AC, 4A DC). The MPA206N features a plunger-type actuator rather than a button actuator, which may affect mechanical interface compatibility with existing panel designs. Operating temperature range is -20°C to 80°C. This part is suitable for applications where the plunger actuator design is compatible with the mechanical installation.

All substitute parts carry REACH Affected status, indicating compliance with current regulatory requirements. Selection should be based on specific application requirements regarding actuator type, operating temperature range, and packaging format.

Frequently Asked Questions (FAQ)

Q: Can the C&K 8261 series switches be used as direct replacements for the MB2085SS1W01-BA?

A: The C&K 8261 series meets all primary electrical and mechanical compatibility criteria: DPDT configuration, 6A AC current rating, 120V AC voltage rating, panel mount rear termination, and solder lug connections. The 6.35mm panel cutout diameter is compatible with standard panel openings. Differences include reduced operating temperature range (-30°C to 65°C versus -30°C to 85°C) and increased electrical life (50,000 cycles). Applications operating above 65°C require evaluation against actual system requirements.

Q: What is the difference between the three C&K substitute parts?

A: The 8261S1HZQE2, 8261SHZQE2, and 8261SHZQE4 are electrically identical DPDT switches with identical electrical specifications. The primary differences are packaging format (tray versus bulk) and actuator cap color (black for 8261S1HZQE2 and 8261SHZQE2; orange for 8261SHZQE4). Selection depends on packaging requirements and visual identification needs in the application.

Q: Is the TE Connectivity MPA206N compatible with the original panel cutout?

A: The MPA206N has a 6.35mm panel cutout diameter, compatible with standard panel openings designed for the original 6.50mm specification. The primary compatibility consideration is the plunger-type actuator, which differs from the round button actuator of the MB2085SS1W01-BA. Mechanical interface compatibility must be evaluated based on the specific panel design and actuator engagement requirements.

Q: What are the voltage and current differences between substitutes?

A: The MB2085SS1W01-BA is rated 6A AC at 125V and 3A DC at 30V. The C&K 8261 series provides 6A AC at 120V and 6A DC at 28V, offering higher DC current capacity. The TE Connectivity MPA206N provides 6A AC at 125V and 4A DC at 28V, matching the original AC voltage rating. All substitutes meet or exceed the original 6A AC requirement. DC voltage ratings are slightly reduced (28V versus 30V), which is acceptable for most applications.

Q: Are all substitute parts RoHS and REACH compliant?

A: All substitute parts listed are ROHS3 compliant. The C&K and TE Connectivity parts carry REACH Affected status, indicating compliance with current REACH regulations. The original MB2085SS1W01-BA is REACH Unaffected. Current regulatory requirements favor the REACH Affected status of the substitute parts.

Q: What is the electrical life difference, and does it matter?

A: The MB2085SS1W01-BA has 25,000 electrical life cycles, while all substitute parts provide 50,000 cycles. This represents a 2x improvement in rated electrical life, beneficial for applications with frequent switching operations. For applications with infrequent switching, this difference has minimal practical impact.