MK2P-S-DC48 Equivalent & Substitute Parts

Part Overview

The MK2P-S-DC48 is a general purpose relay manufactured by Omron Automation and Safety, featuring a DPDT (2 Form C) contact configuration with a 48VDC coil. This socketable, 8-pin octal relay is designed for applications requiring 10A switching capacity at up to 250VAC or 250VDC. The product is currently obsolete, making equivalent substitute parts necessary for system maintenance, repair, and new design implementations where this relay specification remains applicable.

Substiute Parts

MK2P-S-DC48

Omron Automation and SafetyIn Stock: 838MK2P-S-DC48 Datasheet

Current PartRFQ

KRPA-11DG-48

TE Connectivity Potter & Brumfield RelaysIn Stock: 875KRPA-11DG-48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MK2P-S-DC48 is determined by the following critical parameters:

• Coil Voltage: 48VDC (exact match required)
• Contact Form: DPDT (2 Form C) (exact match required)
• Contact Rating: 10A minimum (equal or higher acceptable)
• Mounting Type: Socketable (exact match required)
• Termination Style: Plug In, 8 Pin (Octal) (exact match required)
• Coil Type: Non Latching (exact match required)

The KRPA-11DG-48 manufactured by TE Connectivity Potter & Brumfield Relays meets all critical substitution criteria. Both relays share identical coil voltage, contact configuration, current rating, socketable mounting, octal termination, and non-latching operation. These parameters ensure functional and mechanical compatibility in applications originally designed for the MK2P-S-DC48.

Parameter Comparison

Engineering Selection Recommendations

The KRPA-11DG-48 is the qualified substitute for the obsolete MK2P-S-DC48. Selection is based on the following factors:

Functional Compatibility: Both relays meet identical electrical specifications for coil voltage (48VDC), contact configuration (DPDT), current rating (10A), and coil type (non-latching). Mechanical compatibility is ensured through matching socketable mounting and 8-pin octal termination.

Product Status: The KRPA-11DG-48 maintains active product status with current manufacturing support, addressing the obsolescence of the MK2P-S-DC48.

Regulatory Compliance: The KRPA-11DG-48 is ROHS3 compliant, meeting modern environmental and regulatory requirements. Both parts carry EAR99 ECCN classification and share identical HTSUS codes (8536.41.0050).

Operating Conditions: The KRPA-11DG-48 provides an extended operating temperature range (-45°C ~ 70°C) compared to the MK2P-S-DC48 (-10°C ~ 40°C), offering broader environmental suitability.

Minor Parameter Variations: The KRPA-11DG-48 exhibits slightly lower coil current (26.7 mA vs. 29.5 mA) and marginally higher coil resistance (1.8 kOhms vs. 1.63 kOhms), both within acceptable tolerance for general purpose relay applications. The maximum switching voltage for AC applications is 240VAC (vs. 250VAC for the original), which remains suitable for standard industrial control circuits.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-11DG-48 directly replace the MK2P-S-DC48 in existing applications?

A: Yes. Both relays share identical coil voltage (48VDC), contact configuration (DPDT), current rating (10A), socketable mounting, and 8-pin octal termination. Direct socket substitution is mechanically and electrically compatible.

Q: What are the key differences between these two relays?

A: The primary differences are product status (KRPA-11DG-48 is active; MK2P-S-DC48 is obsolete), operating temperature range (KRPA-11DG-48: -45°C to 70°C; MK2P-S-DC48: -10°C to 40°C), contact material (KRPA-11DG-48 uses Silver Cadmium Oxide; MK2P-S-DC48 uses Silver), and regulatory compliance (KRPA-11DG-48 is ROHS3 compliant). Coil current and maximum AC switching voltage show minor variations within acceptable operating margins.

Q: Are there packaging differences between the MK2P-S-DC48 and KRPA-11DG-48?

A: The MK2P-S-DC48 is supplied with standard packaging, while the KRPA-11DG-48 is supplied in trays. Both are socketable 8-pin octal relays with identical mechanical form factors.

Q: Does the lower coil current of the KRPA-11DG-48 affect circuit design?

A: No. The KRPA-11DG-48 coil current (26.7 mA) is lower than the MK2P-S-DC48 (29.5 mA), which reduces power consumption and heat generation. This represents an improvement for most applications and does not require circuit redesign.

Q: What is the significance of the contact material difference?

A: The MK2P-S-DC48 uses pure Silver (Ag) contacts, while the KRPA-11DG-48 uses Silver Cadmium Oxide (AgCdO) contacts. Silver Cadmium Oxide provides enhanced arc resistance and contact life, particularly in switching applications with inductive loads. This represents a technical advancement suitable for general purpose relay applications.

Q: Are both relays compliant with current environmental regulations?

A: The KRPA-11DG-48 is ROHS3 compliant. Both relays are REACH unaffected or vendor undefined, and both carry EAR99 ECCN classification, meeting standard export and environmental requirements for industrial relay components.