M2028SS1W03 Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The M2028SS1W03 is a panel-mount toggle switch manufactured by NKK Switches with DPDT (Double Pole Double Throw) circuit configuration and momentary-off-momentary (Mom-Off-Mom) switching function. Rated for 6A at 125V AC and 3A at 30V DC, this component features a standard round actuator with epoxy sealed terminals and PC pin termination. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	M2028SS1W03 Value
Manufacturer	NKK Switches
Circuit Configuration	DPDT
Switch Function	Mom-Off-Mom
Current Rating (AC)	6A
Current Rating (DC)	3A
Voltage Rating (AC)	125V
Voltage Rating (DC)	30V
Mounting Type	Panel Mount
Actuator Type	Standard Round
Panel Cutout Diameter	6.50mm
Bushing Thread	1/4-40
Termination Style	PC Pin
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Critical Parameters (Must Match):

Circuit Configuration: DPDT
Switch Function: Mom-Off-Mom
Mounting Type: Panel Mount
Termination Style: PC Pin
Bushing Thread: 1/4-40
RoHS Status: ROHS3 Compliant

Electrical Parameters (Minimum Requirements):

Current Rating (AC): ≥5A
Voltage Rating (AC): ≥120V
Voltage Rating (DC): ≥28V

Mechanical Parameters (Compatibility Range):

Panel Cutout Diameter: 6.35mm to 6.50mm
Actuator Type: Standard Round, Standard Round with Cap, or Anti-Rotation variants

Substitute parts are grouped into two categories: MFR Recommended (direct NKK equivalent) and Similar Manufacturer (alternative brands meeting all critical and electrical parameters).

Parameter Comparison

Part Number	Manufacturer	Circuit	Current (AC)	Voltage (AC)	Voltage (DC)	Actuator Type	Panel Cutout (mm)	Product Status	RoHS
M2028SS1W03	NKK Switches	DPDT	6A	125V	30V	Standard Round	6.50	Obsolete	ROHS3
MN28SS1W03	NKK Switches	DPDT	6A	125V	30V	Standard Round with Cap	6.50	Active	ROHS3
100DP4T4B9M2QEH	E-Switch	DPDT	5A	120V	28V	Standard Round	6.35	Active	ROHS3
7205L2HCQE	C&K	DPDT	5A	120V	28V	Standard Round	6.35	Active	ROHS3
7205L2PYCQE	C&K	DPDT	5A	120V	28V	Anti-Rotation	6.35	Active	ROHS3
7205L2YCQE	C&K	DPDT	5A	120V	28V	Standard Round	6.35	Active	ROHS3
7205L2YCQE2	C&K	DPDT	5A	120V	28V	Standard Round	6.35	Active	ROHS3
7205L2YCQES	C&K	DPDT	5A	120V	28V	Standard Round	6.35	Active	ROHS3
7205L41YCBE2	C&K	DPDT	0.4VA	20V	20V	Flat Anti-Rotation	6.35	Active	ROHS3
7205L41YCQE2	C&K	DPDT	5A	120V	28V	Flat Anti-Rotation	6.35	Active	ROHS3
7205P3DCGE	C&K	DPDT	5A	120V	28V	Flat Anti-Rotation	6.35	Active	ROHS3

Engineering Selection Recommendations

MFR Recommended Substitute:

MN28SS1W03 (NKK Switches) is the primary equivalent. This part maintains identical electrical ratings (6A at 125V AC, 3A at 30V DC), identical circuit configuration (DPDT Mom-Off-Mom), and identical mechanical interface (1/4-40 bushing, 6.50mm panel cutout). The only difference is the actuator design (Standard Round with Cap versus Standard Round). Product status is Active with ROHS3 compliance, eliminating obsolescence risk.

Alternative Substitutes (C&K and E-Switch):

Parts 7205L2HCQE, 7205L2YCQE, 7205L2YCQE2, 7205L2YCQES, 7205L41YCQE2, 7205P3DCGE, and 100DP4T4B9M2QEH meet all critical substitution parameters with reduced electrical ratings (5A at 120V AC, 28V DC). These components are suitable for applications where the original 6A/125V specification exceeds actual circuit requirements. All alternatives are Active products with ROHS3 compliance.

Not Recommended:

7205L41YCBE2 does not meet minimum electrical requirements (0.4VA at 20V) and is unsuitable for substitution.

Frequently Asked Questions (FAQ)

Q: Can MN28SS1W03 directly replace M2028SS1W03?

A: Yes. MN28SS1W03 maintains identical electrical ratings, circuit configuration, and mechanical interface. The actuator design differs (Standard Round with Cap versus Standard Round), but both are compatible with the 1/4-40 bushing and 6.50mm panel cutout.

Q: Are C&K 7205 series parts compatible with the original panel cutout?

A: C&K parts feature a 6.35mm panel cutout versus the original 6.50mm. Panel mounting requires verification that the smaller cutout diameter is acceptable for the application. The 1/4-40 bushing thread remains compatible.

Q: What is the difference between 7205L2YCQE and 7205L2YCQE2?

A: Both parts are electrically and mechanically identical (5A at 120V AC, DPDT Mom-Off-Mom, Standard Round actuator). The difference is cosmetic: 7205L2YCQE2 features a black actuator, while 7205L2YCQE has standard coloring.

Q: Can I use 7205L2PYCQE as a substitute?

A: Yes, with consideration for actuator design. 7205L2PYCQE features an Anti-Rotation actuator versus the Standard Round design of the original part. This prevents unintended rotation but may affect ergonomic operation depending on application requirements.

Q: Why is 7205L41YCBE2 listed but not recommended?

A: 7205L41YCBE2 has electrical ratings of 0.4VA at 20V, which falls below the minimum 5A at 120V requirement for substitution. This part is suitable only for low-power signal switching applications and is not compatible with the original circuit requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes, including MN28SS1W03 and all C&K and E-Switch alternatives, carry ROHS3 compliance certification.

Q: What is the electrical life difference between the original and substitutes?

A: M2028SS1W03 specifies 25,000 cycles. Most C&K and E-Switch alternatives specify 40,000 cycles, providing extended operational life. MN28SS1W03 does not specify electrical life in the provided data.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message