Grayhill 34ASP12B1M2RT Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The Grayhill 34ASP12B1M2RT is an SPDT (Single Pole Double Throw) toggle switch rated for 0.4VA at 20V AC/DC with panel mount configuration. This non-illuminated switch features a standard round actuator with PC pin termination and operates across -30°C to 85°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical ratings, mechanical mounting, and circuit configurations are required for design flexibility, inventory optimization, or supply chain continuity.

Substiute Parts

34ASP12B1M2RT

Grayhill Inc.In Stock: 86834ASP12B1M2RT Datasheet

Current PartRFQ

100SP1T1B1M2REH

E-SwitchIn Stock: 1284100SP1T1B1M2REH Datasheet

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100SP1T1B3M2QEH

E-SwitchIn Stock: 1604100SP1T1B3M2QEH Datasheet

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100SP1T2B3M2QEH

E-SwitchIn Stock: 1224100SP1T2B3M2QEH Datasheet

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7101MDCQE

C&KIn Stock: 9637101MDCQE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 34ASP12B1M2RT are grouped based on strict electrical and mechanical compatibility criteria:

Group 1 - Direct Electrical Equivalents (0.4VA @ 20V):

• 100SP1T1B1M2REH (E-Switch): Maintains identical current and voltage ratings with matching panel cutout and bushing specifications. Differs only in actuator length (10.41mm vs 5.08mm) and includes epoxy sealed terminals feature.

Group 2 - Higher Rated Alternatives (5A @ 120V AC / 28V DC):

• 100SP1T1B3M2QEH (E-Switch): Elevated current and voltage ratings with 10.41mm actuator length
• 100SP1T2B3M2QEH (E-Switch): Elevated current and voltage ratings with 5.08mm actuator length (matches original actuator length)
• 7101MDCQE (C&K): Elevated current and voltage ratings with 6.86mm actuator length and extended electrical life (100,000 cycles vs 40,000)

All substitute parts share identical mounting type (Panel Mount), circuit configuration (SPDT), switch function (On-On), panel cutout dimensions (6.35mm circular), bushing thread (1/4-40), termination style (PC Pin), operating temperature range (-30°C ~ 85°C), and compliance status (ROHS3 Compliant).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): The 100SP1T1B1M2REH from E-Switch provides equivalent electrical performance at 0.4VA and 20V ratings. This part is suitable when the original 34ASP12B1M2RT is unavailable. The primary difference is actuator length (10.41mm vs 5.08mm), which must be verified against panel geometry and user interface requirements. Both parts are Active status and ROHS3 compliant.

For Higher Current/Voltage Applications: When circuit requirements exceed 0.4VA at 20V, the following parts provide upgraded electrical ratings:

• 100SP1T2B3M2QEH maintains the 5.08mm actuator length of the original part while supporting 5A at 120V AC and 28V DC
• 100SP1T1B3M2QEH provides identical electrical ratings with a longer 10.41mm actuator
• 7101MDCQE from C&K offers the same electrical ratings with extended electrical life (100,000 cycles) and intermediate actuator length (6.86mm)

All substitute parts maintain Active product status and ROHS3 compliance. Selection depends on circuit voltage/current requirements, panel cutout geometry, and actuator length constraints.

Frequently Asked Questions (FAQ)

Q: Can the 100SP1T1B1M2REH directly replace the 34ASP12B1M2RT? A: Electrical substitution is valid. Both parts are rated 0.4VA at 20V AC/DC with identical SPDT configuration, panel cutout (6.35mm circular), bushing thread (1/4-40), and PC pin termination. The actuator length differs (10.41mm vs 5.08mm), requiring verification that panel mounting depth accommodates the longer actuator.

Q: What is the difference between Group 1 and Group 2 substitutes? A: Group 1 (100SP1T1B1M2REH) maintains the original 0.4VA @ 20V electrical rating. Group 2 parts (100SP1T1B3M2QEH, 100SP1T2B3M2QEH, 7101MDCQE) provide higher electrical ratings of 5A @ 120V AC and 28V DC. Group 2 parts are suitable only when circuit requirements support these elevated ratings.

Q: Does actuator length affect electrical performance? A: Actuator length does not affect electrical performance. It impacts mechanical interface and user operation feel. The 34ASP12B1M2RT uses 5.08mm; 100SP1T2B3M2QEH also uses 5.08mm; 100SP1T1B1M2REH and 100SP1T1B3M2QEH use 10.41mm; 7101MDCQE uses 6.86mm. Selection depends on panel geometry and actuator travel requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (100SP1T1B1M2REH, 100SP1T1B3M2QEH, 100SP1T2B3M2QEH, 7101MDCQE) are ROHS3 compliant, matching the original 34ASP12B1M2RT compliance status.

Q: What is the electrical life difference between 7101MDCQE and other substitutes? A: The 7101MDCQE from C&K provides 100,000 electrical cycles compared to 40,000 cycles for the original 34ASP12B1M2RT and E-Switch alternatives. This extended life is relevant for high-cycle applications.

Q: Can I use a higher-rated substitute in a lower-voltage circuit? A: Yes. Higher-rated parts (5A @ 120V) operate safely in lower-voltage circuits (0.4VA @ 20V). The switch will function correctly as the circuit voltage and current remain within the part's operating envelope. However, cost and space considerations may favor the original lower-rated part.

Q: What packaging is available for these parts? A: All listed parts are supplied in Bulk packaging. Inventory availability: 34ASP12B1M2RT (807 pcs), 100SP1T1B1M2REH (1254 pcs), 100SP1T1B3M2QEH (1499 pcs), 100SP1T2B3M2QEH (1136 pcs), 7101MDCQE (952 pcs).