MK3PD-5-I-DC48 Equivalent & Substitute Parts

Part Overview

The MK3PD-5-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 product is currently obsolete, making equivalent substitute parts necessary for system maintenance, repair, and new design implementations where this relay type is specified.

Substiute Parts

MK3PD-5-I-DC48

Omron Automation and SafetyIn Stock: 967MK3PD-5-I-DC48 Datasheet

Current PartRFQ

KRPA-14DG-48

TE Connectivity Potter & Brumfield RelaysIn Stock: 1054KRPA-14DG-48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MK3PD-5-I-DC48 is determined by the following critical parameters:

• Coil Voltage: 48VDC (exact match required)
• Contact Form: 3PDT (3 Form C) configuration (exact match required)
• Contact Rating: 10A minimum (equal or higher acceptable)
• Switching Voltage: Minimum 250VAC/250VDC capability
• Termination Style: 11 Pin Octal socketable base (exact match required)
• Coil Type: Non Latching (exact match required)

The KRPA-14DG-48 manufactured by TE Connectivity Potter & Brumfield Relays meets all critical substitution criteria. Both relays share identical coil voltage, contact form, current rating, socketable mounting configuration, and octal termination. The substitute part is functionally compatible for direct replacement in applications where the MK3PD-5-I-DC48 was originally specified.

Parameter Comparison

Engineering Selection Recommendations

The KRPA-14DG-48 is the direct equivalent substitute for the obsolete MK3PD-5-I-DC48. Both relays are electrically and mechanically compatible for socket-based replacement applications.

Compliance Considerations: The KRPA-14DG-48 holds ROHS3 Compliant status and remains in active production, providing long-term availability and supply chain stability compared to the obsolete MK3PD-5-I-DC48. Both parts carry EAR99 ECCN classification and share identical HTSUS codes (8536.41.0050).

Operational Differences: The KRPA-14DG-48 operates across a wider temperature range (-45°C to 70°C versus -10°C to 40°C) and draws slightly lower coil current (26.7 mA versus 29.5 mA). The substitute part has a lower must-operate voltage threshold (36 VDC versus 38.4 VDC), providing improved performance margin in low-voltage conditions. AC switching voltage is rated at 240VAC maximum for the substitute versus 250VAC for the original part; this difference is negligible for standard industrial applications.

Contact Material: The substitute uses Silver Cadmium Oxide (AgCdO) contacts versus pure Silver (Ag) in the original. AgCdO contacts provide superior arc resistance and contact life in switching applications.

Frequently Asked Questions (FAQ)

Q: Can the KRPA-14DG-48 directly replace the MK3PD-5-I-DC48 in existing equipment?

A: Yes. Both relays share identical coil voltage (48VDC), contact configuration (3PDT), current rating (10A), and 11-pin octal socketable termination. Direct socket replacement is mechanically and electrically compatible.

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

A: The primary differences are contact material composition (AgCdO versus Ag), operating temperature range (wider for the substitute), and AC switching voltage rating (240VAC versus 250VAC). The substitute operates at lower coil current and has a lower must-operate voltage, both favorable characteristics.

Q: Is the KRPA-14DG-48 suitable for applications requiring 250VAC switching?

A: The KRPA-14DG-48 is rated for 240VAC maximum switching. Applications requiring 250VAC switching should evaluate whether the 240VAC rating meets system requirements. For 250VAC applications, the original MK3PD-5-I-DC48 specification should be confirmed as mandatory.

Q: Why is the MK3PD-5-I-DC48 obsolete?

A: The MK3PD-5-I-DC48 is no longer manufactured by Omron. The KRPA-14DG-48 provides equivalent functionality and is actively produced, making it the recommended substitute for new designs and replacement applications.

Q: Are there any compliance or certification differences?

A: Both relays are RoHS compliant. The KRPA-14DG-48 carries ROHS3 Compliant status, representing the current regulatory standard. Both parts share identical ECCN and HTSUS classifications.

Q: What is the inventory status of these parts?

A: The MK3PD-5-I-DC48 has 928 pieces in stock as new original inventory. The KRPA-14DG-48 has 1006 pieces in stock. Availability of the obsolete part may diminish over time; the active substitute is recommended for long-term supply assurance.