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The MR-C4255HF Mini-Fit Jr Series–compatible connector housing provides reliable 4.20 mm power connections with up to 9A and 600V performance. Built for durability and easy assembly, it’s an ideal mid-power solution for OEMs, engineers, and repair professionals.
Please call for Pricing and Availability:
Lead times vary by quantity and current production. Please confirm your lead time with Micro-Ray sales before ordering. Contact sales
Micro-Ray is a value-added distributor. Most products can be customized to your requirement - modified terminations and lengths, custom cable assemblies, control panels and light PC board assembly. Call (732) 892-8799 and tell us what you need.
Send us the quantity you need and we will come back with pricing and a firm lead time.
 Single Row Housing .pdf |
 Dual Row Housing .pdf |
| Circuits | Flammability | Competitor P/N | Micro-Ray P/N |
|---|---|---|---|
| 2 | 94V-2 | 39012020, 5557-02R | MR-C4255HF-202-N2NA-A |
| 4 | 94V-2 | 39012040, 5557-04R | MR-C4255HF-204-N2NA-A |
| 6 | 94V-2 | 39012060, 5557-06R | MR-C4255HF-206-N2NA-A |
| 8 | 94V-2 | 39012080, 5557-08R | MR-C4255HF-208-N2NA-A |
| 10 | 94V-2 | 39012100, 5557-10R | MR-C4255HF-210-N2NA-A |
| 12 | 94V-2 | 39012120, 5557-12R | MR-C4255HF-212-N2NA-A |
| 14 | 94V-2 | 39012140, 5557-14R | MR-C4255HF-214-N2NA-A |
| 16 | 94V-2 | 39012160, 5557-16R | MR-C4255HF-216-N2NA-A |
| 18 | 94V-2 | 39012180, 5557-18R | MR-C4255HF-218-N2NA-A |
| 20 | 94V-2 | 39012200, 5557-20R | MR-C4255HF-220-N2NA-A |
| 22 | 94V-2 | 39012220, 5557-22R | MR-C4255HF-222-N2NA-A |
| 24 | 94V-2 | 39012240, 5557-24R | MR-C4255HF-224-N2NA-A |
| 2 | 94V-0 | 39012025, 5557-02R-210 | MR-C4255HF-202-N0WH-A |
| 4 | 94V-0 | 39012045, 5557-04R-210 | MR-C4255HF-204-N0WH-A |
| 6 | 94V-0 | 39012065, 5557-06R-210 | MR-C4255HF-206-N0WH-A |
| 8 | 94V-0 | 39012085, 5557-08R-210 | MR-C4255HF-208-N0WH-A |
| 10 | 94V-0 | 39012105, 5557-10R-210 | MR-C4255HF-210-N0WH-A |
| 12 | 94V-0 | 39012125, 5557-12R-210 | MR-C4255HF-212-N0WH-A |
| 14 | 94V-0 | 39012145, 5557-14R-210 | MR-C4255HF-214-N0WH-A |
| 16 | 94V-0 | 39012165, 5557-16R-210 | MR-C4255HF-216-N0WH-A |
| 18 | 94V-0 | 39012185, 5557-18R-210 | MR-C4255HF-218-N0WH-A |
| 20 | 94V-0 | 39012205, 5557-20R-210 | MR-C4255HF-220-N0WH-A |
| 22 | 94V-0 | 39012225, 5557-22R-210 | MR-C4255HF-222-N0WH-A |
| 24 | 94V-0 | 39012245, 5557-24R-210 | MR-C4255HF-224-N0WH-A |
The MR-C4255HF 4.2 mm connector housing is a high-performance, cost-effective solution for mid-power electrical connections. Designed as a Mini-Fit Jr. alternative, it delivers secure terminal retention, reliable mating, and consistent electrical performance for a wide range of applications.
Engineered for wire-to-board and wire-to-wire configurations, this connector supports multiple circuit counts and works with standard Mini-Fit Jr. crimp terminals. Its compact 4.2 mm pitch makes it ideal for power supplies, gaming systems, industrial controls, HVAC equipment, and consumer electronics, offering dense, high-current connectivity in a small footprint.
Optimized for durability and easy assembly, the MR-C4255HF ensures stable performance even in demanding environments, making it a reliable choice for OEMs, repair services, and engineers seeking a dependable Mini-Fit Jr. compatible housing.
Technical Features:
Pitch: 4.20 mm
Current Rating: Up to 9A AC/DC
Voltage Rating: 600V AC/DC
Operating Temperature: –25°C to +85°C
Contact Resistance: ≤10 mΩ
Insulation Resistance: ≥1000 MΩ
Withstanding Voltage: 1500V AC for 1 min
Wire Range: AWG 18–24
This MR-C4255HF connector housing offers high-current performance, reliability, and compact design for a wide range of mid-power applications.
Similar to the referenced part, not a guaranteed drop-in. Please check dimensions, pin-out and ratings against your drawing or the manufacturer data sheet before ordering.
| Part Number (SKU) | MR-C4255HF |
|---|---|
| Category | Cross Reference, Molex Mini-Fit Jr., 4.2mm Mini-Fit Alternative |
| Number of Housing Positions | 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24 |
| Pitch | 4.20 mm |
| Current Rating | Up to 9A AC/DC |
| Voltage Rating | 600V AC/DC |
| Operating Temperature | –25°C to +85°C |
| Contact Resistance | ≤10 mΩ |
| Insulation Resistance | ≥1000 MΩ |
| Withstanding Voltage | 1500V AC for 1 min |
| Wire Range | AWG 18–24 |
| Availability | Please call for lead-time |
| Typical Lead Time | Please call for stock check or lead-time |
Missing a value you need? Our sales team can supply full specifications and drawings for any part in the catalog. Contact Micro-Ray
Stocked items ship on receipt of order. Parts we build to your requirement ship once production is complete; your lead time is confirmed on your quote before you commit to an order.
Shipping is calculated at checkout from the weight and dimensions of the parts in your cart. For freight, drop-ship or international orders, contact our sales team and we will quote the best available rate.
Contact Micro-Ray SalesSend us your part number, drawing, or a description of what you need. A real person on our team will get back to you.
