Omron MK2ZP DC12 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The Omron MK2ZP DC12 is an active general purpose relay featuring DPDT (2 Form C) contact configuration with 10A switching capacity at 12VDC coil voltage. This socketable, 8-pin octal relay is designed for standard industrial control applications requiring reliable switching of AC and DC loads. Substitute parts are identified to provide alternative sourcing options while maintaining functional and electrical compatibility within specified parameter ranges.

Key Parameters

Parameter	Value
Coil Voltage	12VDC
Contact Form	DPDT (2 Form C)
Contact Rating (Current)	10 A
Switching Voltage	250VAC, 250VDC - Max
Mounting Type	Socketable
Termination Style	Plug In, 8 Pin (Octal)
Coil Type	Non Latching
Operating Temperature Range	-10°C ~ 40°C
Contact Material	Silver (Ag)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts for the MK2ZP DC12 are qualified based on the following critical parameters:

Coil voltage matching at 12VDC ensures direct electrical compatibility without circuit modification. Contact form equivalence (DPDT) preserves switching functionality. Current rating of 10A maintains load-switching capacity. Socketable mounting with 8-pin octal termination ensures mechanical and electrical interchangeability. Non-latching coil type confirms identical operational behavior. General purpose relay classification confirms application suitability.

The substitute parts KRPA-11DG-12 and KRPA-11DN-12 (TE Connectivity Potter & Brumfield) meet all critical substitution criteria. Both feature 12VDC coil voltage, DPDT contact configuration, 10A current rating, socketable mounting, and 8-pin octal termination. Operating temperature ranges and compliance certifications differ but do not prevent functional substitution.

Parameter Comparison

Parameter	MK2ZP DC12	KRPA-11DG-12	KRPA-11DN-12
Manufacturer	Omron Automation and Safety	TE Connectivity Potter & Brumfield	TE Connectivity Potter & Brumfield
Coil Voltage	12VDC	12VDC	12VDC
Contact Form	DPDT (2 Form C)	DPDT (2 Form C)	DPDT (2 Form C)
Contact Rating (Current)	10 A	10 A	10 A
Switching Voltage - Max	250VAC, 250VDC	240VAC	240VAC
Coil Current	126 mA	100 mA	100 mA
Mounting Type	Socketable	Socketable	Socketable
Termination Style	Plug In, 8 Pin (Octal)	Plug In, 8 Pin (Octal)	Plug In, 8 Pin (Octal)
Coil Type	Non Latching	Non Latching	Non Latching
Operating Temperature Range	-10°C ~ 40°C	-45°C ~ 70°C	-45°C ~ 70°C
Contact Material	Silver (Ag)	Silver Cadmium Oxide (AgCdO)	Silver Cadmium Oxide (AgCdO)
Coil Resistance	95 Ohms	120 Ohms	120 Ohms
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three relays maintain active product status with current manufacturer support. The MK2ZP DC12 carries RoHS compliance certification. Both KRPA-11DG-12 and KRPA-11DN-12 carry ROHS3 compliance, meeting current regulatory requirements.

The KRPA-11DN-12 includes a lighted indicator feature not present in the MK2ZP DC12 or KRPA-11DG-12. This distinction affects only visual feedback capability and does not impact core switching functionality.

Switching voltage specification differs: the MK2ZP DC12 supports 250VAC and 250VDC maximum, while both KRPA substitutes support 240VAC maximum. Applications requiring 250VDC switching must retain the MK2ZP DC12. Applications limited to 240VAC operation accept either substitute.

Coil current differs: MK2ZP DC12 draws 126 mA while KRPA variants draw 100 mA. Circuit power supply design must accommodate the higher current draw of the MK2ZP DC12.

Operating temperature ranges differ: MK2ZP DC12 operates -10°C to 40°C; KRPA variants operate -45°C to 70°C. Applications requiring extended temperature operation favor KRPA substitutes.

Frequently Asked Questions (FAQ)

Q: Can KRPA-11DG-12 and KRPA-11DN-12 be used interchangeably with MK2ZP DC12?

A: Both KRPA variants are functionally equivalent for applications operating within 240VAC switching voltage and -10°C to 40°C temperature ranges. The KRPA-11DN-12 includes a lighted indicator; the KRPA-11DG-12 does not. Socket compatibility and electrical ratings are identical.

Q: What is the difference between KRPA-11DG-12 and KRPA-11DN-12?

A: Both parts share identical electrical specifications, coil voltage, contact configuration, and current ratings. The KRPA-11DN-12 includes a lighted indicator feature for visual coil energization status. The KRPA-11DG-12 provides the same switching function without indicator capability.

Q: Does switching voltage difference affect substitution?

A: Yes. The MK2ZP DC12 supports 250VDC switching; KRPA variants support 240VAC maximum. Applications requiring 250VDC switching capability must use MK2ZP DC12. Applications limited to 240VAC operation accept KRPA substitutes.

Q: Are there coil current implications for circuit design?

A: Yes. MK2ZP DC12 requires 126 mA coil current; KRPA variants require 100 mA. Power supply design must accommodate the higher current draw of MK2ZP DC12. KRPA substitutes reduce coil current demand by approximately 21%.

Q: Do operating temperature ranges affect part selection?

A: Yes. MK2ZP DC12 operates -10°C to 40°C; KRPA variants operate -45°C to 70°C. Applications requiring extended temperature operation, particularly below -10°C or above 40°C, require KRPA substitutes. Standard industrial environments within -10°C to 40°C accept either part.

Q: Are all three relays RoHS compliant?

A: Yes. MK2ZP DC12 is RoHS compliant. KRPA-11DG-12 and KRPA-11DN-12 are ROHS3 compliant, meeting current regulatory standards.

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