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MK3P2-I DC48 Equivalent & Substitute Parts
Part Overview
The MK3P2-I DC48 is a general purpose relay manufactured by Omron Automation and Safety, featuring a 3PDT (3 Form C) contact configuration with a 48VDC coil and 10A contact rating. This socketable relay is designed for industrial control applications requiring reliable switching of AC and DC loads.
The MK3P2-I DC48 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support legacy equipment maintenance where original components are no longer readily available.
Substiute Parts
Key Parameters
| Parameter | MK3P2-I DC48 |
|---|---|
| Coil Voltage | 48VDC |
| Contact Form | 3PDT (3 Form C) |
| Contact Rating (Current) | 10 A |
| Switching Voltage | 250VAC, 250VDC - Max |
| Mounting Type | Socketable |
| Termination Style | Plug In, 11 Pin (Octal) |
| Coil Type | Non Latching |
| Relay Type | General Purpose |
Substitute Part Grouping Explanation
Substitute parts for the MK3P2-I DC48 must satisfy the following critical parameters to ensure functional equivalence:
- Coil voltage of 48VDC
- 3PDT (3 Form C) contact configuration
- 10A contact rating minimum
- Socketable mounting with 11 Pin (Octal) termination
- Non-latching coil type
- General purpose relay classification
The KRPA-14DG-48 manufactured by TE Connectivity Potter & Brumfield Relays meets all mandatory substitution criteria. Both relays share identical coil voltage, contact form, current rating, mounting type, and termination style, making them functionally interchangeable in applications where the specified electrical parameters are required.
Parameter Comparison
| Parameter | MK3P2-I DC48 | KRPA-14DG-48 |
|---|---|---|
| Manufacturer | Omron Automation and Safety | TE Connectivity Potter & Brumfield Relays |
| Coil Voltage | 48VDC | 48VDC |
| Contact Form | 3PDT (3 Form C) | 3PDT (3 Form C) |
| Contact Rating (Current) | 10 A | 10 A |
| Switching Voltage - Max | 250VAC, 250VDC | 240VAC |
| Coil Current | 29.5 mA | 26.7 mA |
| Mounting Type | Socketable | Socketable |
| Termination Style | Plug In, 11 Pin (Octal) | Plug In, 11 Pin (Octal) |
| Coil Type | Non Latching | Non Latching |
| Relay Type | General Purpose | General Purpose |
| Must Operate Voltage | 38.4 VDC | 36 VDC |
| Operating Temperature Range | -10°C ~ 40°C | -45°C ~ 70°C |
| Contact Material | Silver (Ag) | Silver Cadmium Oxide (AgCdO) |
| Coil Resistance | 1.63 kOhms | 1.8 kOhms |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The KRPA-14DG-48 is the qualified substitute for the obsolete MK3P2-I DC48. Both relays are RoHS compliant and share identical electrical specifications for coil voltage, contact configuration, current rating, and termination style.
The KRPA-14DG-48 offers the advantage of active product status, ensuring ongoing availability and supply chain support. The substitute part demonstrates superior operating temperature range (-45°C ~ 70°C versus -10°C ~ 40°C) and lower coil current draw (26.7 mA versus 29.5 mA), providing enhanced performance margins in temperature-sensitive or power-constrained applications.
The KRPA-14DG-48 achieves ROHS3 compliance, meeting current regulatory requirements for new equipment designs and system upgrades.
Frequently Asked Questions (FAQ)
Q: Can the KRPA-14DG-48 directly replace the MK3P2-I DC48 in existing installations?
A: Yes. Both relays share identical coil voltage (48VDC), contact form (3PDT), current rating (10A), mounting type (socketable), and 11-pin octal termination. Direct socket substitution is possible without circuit modification.
Q: What are the differences in switching voltage ratings?
A: The MK3P2-I DC48 is rated for 250VAC and 250VDC maximum switching voltage. The KRPA-14DG-48 is rated for 240VAC maximum. For applications requiring 250VAC switching, the MK3P2-I DC48 specification must be verified against actual load requirements. The KRPA-14DG-48 is suitable for standard industrial AC applications at 240VAC or lower.
Q: How do the operating temperature ranges compare?
A: The MK3P2-I DC48 operates from -10°C to 40°C. The KRPA-14DG-48 operates from -45°C to 70°C. The substitute part provides a wider temperature envelope, making it suitable for applications with extended environmental requirements.
Q: Are there differences in contact material?
A: The MK3P2-I DC48 uses silver (Ag) contacts. The KRPA-14DG-48 uses silver cadmium oxide (AgCdO) contacts. Both materials are suitable for general purpose relay applications. Contact material selection depends on specific load characteristics and application requirements.
Q: What is the coil current difference?
A: The MK3P2-I DC48 draws 29.5 mA. The KRPA-14DG-48 draws 26.7 mA. The lower coil current of the substitute part reduces power consumption and heat generation in the control circuit.
Q: Are both parts RoHS compliant?
A: Yes. The MK3P2-I DC48 is RoHS compliant. The KRPA-14DG-48 is ROHS3 compliant, meeting current regulatory standards for electronic components.
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