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MJN3C-DC24 Equivalent & Substitute Parts
Part Overview
The MJN3C-DC24 is a general purpose relay manufactured by Omron Automation and Safety. This 3PDT (3 Form C) relay operates on a 24VDC coil and is rated for 10A switching capacity. The part is currently active in production and available in socketable mounting configuration with quick-connect termination.
Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the critical operating parameters. The KUP-14D15-24 from TE Connectivity Potter & Brumfield Relays serves as a direct functional equivalent for applications requiring identical contact form, coil voltage, and current rating specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Coil Voltage | 24VDC |
| Contact Form | 3PDT (3 Form C) |
| Contact Rating (Current) | 10 A |
| Mounting Type | Socketable |
| Termination Style | Plug In, Quick Connect - 0.187" (4.7mm) |
| Coil Type | Non Latching |
| Operating Temperature Range | -45°C ~ 70°C |
| Must Operate Voltage | 18 VDC |
| Relay Type | General Purpose |
Substitute Part Grouping Explanation
Substitution eligibility for the MJN3C-DC24 is determined by strict equivalence across the following critical parameters:
- Coil voltage specification (24VDC)
- Contact form configuration (3PDT / 3 Form C)
- Current rating (10A minimum)
- Mounting type (Socketable)
- Termination connector type (0.187" quick connect)
- Coil type (Non Latching)
- Operating temperature range compatibility (-45°C ~ 70°C minimum)
- Must operate voltage threshold (18VDC or lower)
The KUP-14D15-24 meets all substitution criteria across these parameters, establishing it as a qualified equivalent part.
Parameter Comparison
| Parameter | MJN3C-DC24 (Omron) | KUP-14D15-24 (TE Connectivity) |
|---|---|---|
| Coil Voltage | 24VDC | 24VDC |
| Contact Form | 3PDT (3 Form C) | 3PDT (3 Form C) |
| Contact Rating (Current) | 10 A | 10 A |
| Coil Current | 50 mA | 51 mA |
| Coil Resistance | 470 Ohms | 472 Ohms |
| Mounting Type | Socketable | Socketable |
| Termination Style | Plug In, Quick Connect - 0.187" (4.7mm) | Plug In, Quick Connect - 0.187" (4.7mm) |
| Coil Type | Non Latching | Non Latching |
| Operate Time | 20 ms | 15 ms |
| Release Time | 10 ms | 10 ms |
| Operating Temperature | -45°C ~ 70°C | -45°C ~ 70°C |
| Must Operate Voltage | 18 VDC | 18 VDC |
| Contact Material | Silver Alloy | Silver Cadmium Oxide (AgCdO) |
| Switching Voltage (Max) | 600VAC, 28VDC | 240VAC |
| Product Status | Active | Active |
| RoHS Status | RoHS Compliant | RoHS non-compliant |
Engineering Selection Recommendations
Both the MJN3C-DC24 and KUP-14D15-24 are active production parts with identical contact form, coil voltage, current rating, and mechanical compatibility. Selection between these parts should be based on regulatory and compliance requirements specific to the application.
The MJN3C-DC24 carries RoHS compliance certification, making it suitable for applications subject to RoHS directives. The KUP-14D15-24 is RoHS non-compliant and REACH-affected, requiring evaluation against application-specific regulatory constraints.
The KUP-14D15-24 demonstrates faster operate time (15 ms versus 20 ms), which may be advantageous in time-critical switching applications. The MJN3C-DC24 provides higher maximum switching voltage capability (600VAC, 28VDC versus 240VAC), suitable for higher-voltage circuit applications.
Frequently Asked Questions (FAQ)
Q: Can the KUP-14D15-24 be used as a direct replacement for the MJN3C-DC24?
A: Yes, the KUP-14D15-24 is mechanically and electrically compatible as a substitute. Both parts share identical coil voltage (24VDC), contact form (3PDT), current rating (10A), mounting type (socketable), and termination style (0.187" quick connect). Compliance requirements must be evaluated for your specific application.
Q: What are the key differences between these two relays?
A: The primary differences are: (1) RoHS compliance status—MJN3C-DC24 is RoHS compliant while KUP-14D15-24 is not; (2) operate time—KUP-14D15-24 operates 5 ms faster; (3) maximum switching voltage—MJN3C-DC24 supports 600VAC/28VDC versus 240VAC for KUP-14D15-24; (4) contact material—MJN3C-DC24 uses Silver Alloy while KUP-14D15-24 uses Silver Cadmium Oxide.
Q: Are the coil specifications identical?
A: Coil specifications are nearly identical. Both operate at 24VDC with coil current of approximately 50-51 mA and coil resistance of 470-472 Ohms. These minor variations do not affect functional compatibility.
Q: Which part should I select for a RoHS-compliant application?
A: The MJN3C-DC24 is RoHS compliant and is the appropriate selection for applications requiring RoHS certification.
Q: Are the termination connectors compatible?
A: Yes, both parts use identical termination style: Plug In, Quick Connect with 0.187" (4.7mm) connector dimensions. Socket compatibility is maintained between the two parts.
Q: What is the operating temperature range for both relays?
A: Both the MJN3C-DC24 and KUP-14D15-24 operate across the identical temperature range of -45°C to 70°C.
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