HC2-H-DC12V Equivalent & Substitute Parts

Part Overview

The HC2-H-DC12V is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with 12VDC coil voltage and 7A contact rating. This socketable relay is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The relay operates with 75mA coil current and supports switching voltages up to 250VAC, with operating temperature range from -50°C to 70°C.

Key Parameters

Parameter	HC2-H-DC12V
Manufacturer	Panasonic Electric Works
Coil Voltage	12VDC
Contact Form	DPDT (2 Form C)
Contact Rating (Current)	7A
Switching Voltage	250VAC - Max
Coil Current	75mA
Mounting Type	Socketable
Termination Style	Plug In
Coil Resistance	160 Ohms
Operating Temperature	-50°C ~ 70°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the HC2-H-DC12V is determined by the following critical parameters:

Primary Compatibility Criteria:

Coil voltage: 12VDC (exact match required)
Contact form: DPDT (2 Form C) (exact match required)
Mounting type: Socketable (exact match required)
Termination style: Plug In (exact match required)
Coil current: 75mA (exact match required)
Coil resistance: 160 Ohms (exact match required)

Secondary Compatibility Criteria:

Contact rating (current): Equal to or greater than 7A
Switching voltage: Equal to or greater than 250VAC
Operating temperature range: Must encompass or exceed -50°C to 70°C

The substitute parts listed below meet all primary compatibility criteria. Contact rating variations are acceptable when the substitute part rating equals or exceeds the original specification, as this provides equivalent or enhanced switching capacity.

Parameter Comparison

Parameter	HC2-H-DC12V	KHAU-11D11-12	KHAU-11D12-12	MY2 DC12 (S)
Manufacturer	Panasonic Electric Works	TE Connectivity Potter & Brumfield Relays	TE Connectivity Potter & Brumfield Relays	Omron Automation and Safety
Coil Voltage	12VDC	12VDC	12VDC	12VDC
Contact Form	DPDT (2 Form C)	DPDT (2 Form C)	DPDT (2 Form C)	DPDT (2 Form C)
Contact Rating (Current)	7A	3A	5A	5A
Switching Voltage	250VAC - Max	240VAC - Max	240VAC - Max	250VAC, 125VDC - Max
Coil Current	75mA	75mA	75mA	75mA
Mounting Type	Socketable	Socketable	Socketable	Socketable
Termination Style	Plug In	Plug In	Plug In	Plug In
Coil Resistance	160 Ohms	160 Ohms	160 Ohms	160 Ohms
Operating Temperature	-50°C ~ 70°C	-45°C ~ 70°C	-45°C ~ 70°C	-55°C ~ 70°C
Product Status	Obsolete	Active	Active	Active
Contact Material	Silver Alloy	Silver (Ag)	Silver Cadmium Oxide (AgCdO)	Silver (Ag)
RoHS Status	Not specified	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant
REACH Status	REACH Unaffected	Vendor Undefined	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

KHAU-11D11-12 (TE Connectivity Potter & Brumfield Relays)

This substitute is electrically compatible with the HC2-H-DC12V across all primary parameters. However, the contact rating of 3A is below the original 7A specification. This part is suitable only for applications where the actual switching current requirement is 3A or less. The part is active and ROHS3 compliant, supporting modern regulatory requirements.

KHAU-11D12-12 (TE Connectivity Potter & Brumfield Relays)

This substitute meets all primary compatibility criteria with a 5A contact rating, which is lower than the original 7A specification but acceptable for applications requiring 5A or less. The switching voltage of 240VAC is marginally lower than the original 250VAC specification. This part is active but RoHS non-compliant and REACH affected, which may restrict use in certain regulatory environments.

MY2 DC12 (S) (Omron Automation and Safety)

This substitute provides full electrical compatibility with the HC2-H-DC12V. The 5A contact rating is lower than the original 7A specification but suitable for applications requiring 5A or less. The switching voltage specification of 250VAC matches the original, and the operating temperature range of -55°C to 70°C exceeds the original specification. This part is active, RoHS compliant, and REACH unaffected, making it suitable for applications with modern regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can KHAU-11D11-12 directly replace HC2-H-DC12V in all applications?

A: No. While KHAU-11D11-12 matches all primary electrical and mechanical parameters, its 3A contact rating is significantly lower than the original 7A specification. Direct replacement is limited to applications where the actual switching current does not exceed 3A.

Q: What is the primary limitation of KHAU-11D12-12 as a substitute?

A: The contact rating of 5A is lower than the original 7A specification. Additionally, the switching voltage maximum of 240VAC is 10VAC lower than the original 250VAC specification. Applications requiring the full 7A capacity or 250VAC switching voltage cannot use this substitute.

Q: Is MY2 DC12 (S) suitable for applications requiring the full 7A contact rating?

A: No. The MY2 DC12 (S) has a 5A contact rating, which is lower than the original 7A specification. It is suitable only for applications requiring 5A or less.

Q: What are the regulatory compliance differences between the substitute parts?

A: KHAU-11D11-12 is ROHS3 compliant. KHAU-11D12-12 is RoHS non-compliant and REACH affected. MY2 DC12 (S) is RoHS compliant and REACH unaffected. Applications subject to RoHS or REACH regulations should select accordingly.

Q: Do all substitute parts operate within the original temperature range of -50°C to 70°C?

A: KHAU-11D11-12 and KHAU-11D12-12 operate from -45°C to 70°C, which does not cover the lower -50°C limit of the original. MY2 DC12 (S) operates from -55°C to 70°C, which exceeds the original range.

Q: Are the socketable and plug-in termination characteristics identical across all parts?

A: Yes. All substitute parts are socketable with plug-in termination style, matching the original HC2-H-DC12V configuration.

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