Solar Panel MC4 Connector 1000 Volts with 20A Fuse
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SKU: 4904-1020
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Conversions Tech MC4 Connector with 20A Fuse — Inline Solar PV Protection (IP67 Rated)
The Conversions Tech MC4 Connector with 20A Fuse is a high-performance inline fuse connector designed to provide reliable overload protection and secure connectivity in solar photovoltaic (PV) systems. Engineered for solar panels equipped with standard MC4-style connectors, this inline fuse assembly acts as a critical safety link between the solar array and inverter or controller. Featuring a crimp-style connection for superior electrical stability and reduced contact resistance, this unit ensures long-term performance even under harsh outdoor conditions.
Key Features and Advantages
- Integrated 20A Fuse Protection: Safeguards solar modules, inverters, and charge controllers from overload currents and short circuits.
- MC4-Compatible Design: Fully compatible with standard Multi-Contact MC4 connectors and equivalent models used in modern solar systems.
- Crimp-Type Connection: Provides a stable, vibration-resistant connection superior to conventional spring or clamp-style fuses.
- Universal Cable Support: Accommodates 2.5 mm², 4 mm², and 6 mm² solar cables for versatile installation across PV systems.
- Weatherproof IP67 Rating: Dust-tight and waterproof housing ensures reliable operation for over a decade in outdoor installations.
- UV-Resistant Construction: Built to withstand continuous sunlight exposure without degradation or loss of insulation properties.
- Quick-Replace Fuse Design: Inline fuse module allows fast replacement without disconnecting the main MC4 connections.
- High Durability: Engineered for field longevity, maintaining stable contact performance across thermal cycles and environmental stress.
Technical Specifications
| Product Type: | MC4 Connector with Inline Fuse |
| Fuse Rating: | 20 Amp (10×85 mm Solar Fuse Type) |
| Connection Type: | Crimp |
| Compatibility: | Multi-Contact MC4 and Equivalent Connector Types |
| Cable Compatibility: | 2.5 mm² / 4 mm² / 6 mm² Solar PV Cable |
| Voltage Rating: | 1000 V DC (Max) |
| Ingress Protection: | IP67 — Waterproof and Dustproof |
| Operating Temperature: | −40°C to +85°C |
| Material: | UV-Stabilized PPO + Copper Alloy Contacts (Tin Plated) |
| Service Life: | 10+ Years (Outdoor Rated) |
| Standard Compliance: | IEC 61215, IEC 61730, UL 6703 |
| Country of Origin: | USA |
Recommended Applications
- Solar PV panel-to-inverter connection protection
- Off-grid and hybrid renewable energy systems
- Battery charging systems and combiner boxes
- Commercial and residential rooftop installations
- Utility-scale solar farms and microgrid systems
Frequently Asked Questions (FAQs)
1. What does the MC4 connector with fuse do?
It provides inline overcurrent protection between solar panels and the inverter or charge controller, preventing system damage due to overloads or short circuits.
2. What is the fuse rating for this connector?
This unit includes a 20A inline fuse rated up to 1000 V DC, ideal for most medium- and large-scale PV systems.
3. Is it compatible with standard MC4 connectors?
Yes. It is fully compatible with Multi-Contact MC4 and equivalent connectors used globally in solar installations.
4. How is this version different from a regular fuse holder?
Unlike traditional fuse holders, this model uses a crimp connection to ensure long-term stability, reducing resistance and preventing loosening over time.
5. Can I replace the fuse without removing the connectors?
Yes. The inline fuse housing is designed for quick replacement while keeping the main MC4 connection intact.
6. What cable sizes can it accept?
The connector supports 2.5 mm², 4 mm², and 6 mm² solar PV cables, making it suitable for most panel and inverter wiring configurations.
7. Is it waterproof?
Yes. It has an IP67 waterproof rating, ensuring long-term outdoor performance even in harsh weather conditions.
8. How long will it last in the field?
It is designed to last over 10 years outdoors under continuous UV and environmental exposure.
9. Can I use this fuse connector in parallel solar string setups?
Yes. It’s suitable for parallel or series configurations in both rooftop and utility-scale PV systems.
10. Who manufactures this connector?
All MC4 fuse connectors are engineered and quality-tested by Conversions Tech in compliance with IEC and UL solar connector standards.
© 2023 Conversions Tech. All rights reserved.
4 Reasons Pros Buy Direct from Conversions Tech
Headquartered in business-friendly Wyoming, we design, test, and ship every product from inside the United States—delivering genuine “Made-for-America” quality without the big-box markup.
Our in-house team owns every CAD file, mold, and QA station behind our weatherproof boxes, conduit bodies, and power inverters. Vertical control means tighter tolerances, UL-listed safety, and up to 30 % lower cost than private-label imports.
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Bottom line: For rugged, code-compliant electrical solutions shipped fast from a trusted U.S. source, choose Conversions Tech and build it right the first time.
