| Parameter | Specification |
|---|---|
| Product Model | SUNTREE SRD-50H |
| Product Type | PV DC Fuse / DC Fuse Isolating Switch |
| Application | Solar PV / Low-Voltage DC / Energy Storage |
| Rated Service Voltage (Ue) | 1500V DC |
| Rated Insulation Voltage (Ui) | 1600V |
| Rated Service Current (Ie) | 2A–50A |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Acceptable Power Dissipation | ≤12W |
| Number of Poles | 1P |
| Rated Limiting Short-Circuit Current | Up to 50kA |
| Fuse Dimensions | 10×85mm / 14×85mm |
| Protection Degree | IP20 |
| Usage Category | PV-0 |
| Standards | IEC/EN 60947-1, IEC/EN 60947-3 |
The official SUNTREE technical reference lists current options of 2A, 3A, 4A, 5A, 6A, 8A, 10A, 12A, 15A, 16A, 20A, 25A, 30A, 32A, 35A, 40A, 45A and 50A.
The SRD-50H is available in a broad range of current ratings for different photovoltaic string and DC protection requirements.
| Product Series | Available Current Ratings |
| SRD-50H | 2A / 3A / 4A / 5A / 6A / 8A / 10A / 12A / 15A / 16A / 20A / 25A / 30A / 32A / 35A / 40A / 45A / 50A |
The appropriate fuse rating should be selected according to the maximum operating current, PV string characteristics and protection requirements of the system.
| Parameter | Specification |
| Rated Service Voltage (Ue) | 1500V DC |
| Rated Insulation Voltage (Ui) | 1600V |
| Rated Service Current (Ie) | Up to 50A |
| Rated Impulse Withstand Voltage (Uimp) | 8kV |
| Rated Acceptable Power Dissipation | ≤12W |
| Number of Poles | 1P |
| Fuse Size | 10×85mm / 14×85mm |
| Protection Degree | IP20 |
| Usage Category | PV-0 |
| Protection Function | Specification |
| Overload Protection | Yes |
| Short-Circuit Protection | Yes |
| PV String Protection | Yes |
| Fuse Status Indication | Indicator Window |
| Fuse Replacement | Replaceable Fuse Link |
| Fuse Isolation | Yes |
| Short-Circuit Capacity | Up to 50kA, depending on fuse configuration |
| Usage Category | PV-0 |
The SRD-50H is designed to interrupt excessive current caused by overload and short-circuit faults. SUNTREE’s product information also specifies that PV string sets should be equipped with a DC fuse protection circuit to remove faults and protect the system.
The SRD-50H incorporates an indication window that allows the operator to identify the condition of the fuse without removing the fuse link.
| Fuse Condition | Indicator Status |
| Fuse Normal | Indicator Off |
| Fuse Blown | Indicator On |
This visual indication can simplify inspection and maintenance of photovoltaic and DC protection systems.
The SUNTREE SRD-50H is a 1500V DC photovoltaic fuse and fuse isolating switch designed to provide overload and short-circuit protection for PV and DC electrical systems.
The SRD-50H has a rated service voltage of 1500V DC and a rated insulation voltage of 1600V.
The SRD-50H supports current ratings from 2A to 50A, including 2A, 3A, 4A, 5A, 6A, 8A, 10A, 12A, 15A, 16A, 20A, 25A, 30A, 32A, 35A, 40A, 45A and 50A.
The main product page lists a rated limiting short-circuit current of up to 50kA. The dedicated energy-storage reference further specifies 30kA for the φ10×85mm configuration and 50kA for the φ14×85mm configuration. Therefore, the actual short-circuit capacity depends on the selected fuse configuration.
The SRD-50H supports 10×85mm and 14×85mm fuse dimensions.
Yes. The SRD-50H has an indication window. The indicator turns on when the fuse is blown and remains off during normal operation.
Yes. The product is designed to provide both overload protection and short-circuit protection for PV and DC systems.
The SRD-50H has an IP20 ingress protection rating.
2 reviews for SUNTREE SRD-50H 1500V PV DC Fuse
susan –
Can this fuse be used in a 1500V solar PV system, and does it come with the fuse link included?
Emiliano –
A 1500V DC rating makes this look like a solid option for higher-voltage PV systems.