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RT18-63X 2P DIN Rail Fuse Holder 63A 690V
Large-scale photovoltaic arrays, high-capacity battery storage banks, and heavy-duty dual-line industrial circuits demand a fuse holder that can carry 63A continuously while protecting both conductors simultaneously. The Soltree RT18-63X 2P delivers exactly that: two independent 63A fuse positions in one compact module, rated at 690V AC or 500V DC, accommodating 14x51mm cylindrical fuse links. Compared to the RT18-32X 2P, the larger 14x51mm fuse format allows selection of higher-breaking-capacity fuse elements suited to the elevated fault currents found in large PV string combiners and battery inverter feeds. The reinforced flame-retardant PVC housing handles the thermal demands of high sustained currents, while high-conductivity copper contacts with optional tin plating minimize oxidation and contact resistance over time. A red LED status indicator on each pole gives immediate visual fault confirmation. Snap-on 35mm DIN rail mounting and 4mm²–16mm² screw clamp terminals support both quick installation and robust cable connections. Note: fuse links are sold separately.
Key Features
- Double-pole design — simultaneous high-current protection on both conductors
- Rated 63A / 690V AC or 500V DC — suited for large PV arrays and battery storage
- Compatible with standard 14x51mm cylindrical fuse links
- LED indicator per pole — instant fault detection on either conductor
- Reinforced flame-retardant PVC housing — handles high sustained current loads
- High-conductivity copper contacts — low oxidation, stable long-term DC performance
- Snap-on 35mm DIN rail mounting
- Screw clamp terminals for 4mm²–16mm² cables
- IP20 touch-safe protection
- Suitable for large PV arrays, battery inverter feeds, dual-line AC/DC circuits
- Compliant with IEC 60269 and GB/T 13539
- Fuse links sold separately
Samples available · OEM pricing on request · Ships worldwide
Technical Specifications
| Product Type | High-Current Fuse Holder Base |
| Model Number | RT18-63X |
| Pole Configuration | 2P (Double Pole) |
| Rated Current | 63A |
| Rated Voltage | 690V AC / 500V DC |
| Compatible Fuse Size | 14x51mm |
| Mounting Type | 35mm DIN Rail (Top-hat) |
| Housing Material | Flame-retardant PVC (UL94 V-0) |
| Contact Material | High-conductivity Copper (Tin-plated optional) |
| Indicator Type | LED Status Light (Red, per pole) |
| Indicator Logic | Lights up upon fuse failure |
| Connection Method | Screw clamp terminals |
| Suitable Wire Size | 4mm² – 16mm² (AWG 12-6) |
| Protection Class | IP20 (Touch-safe) |
| Operating Temperature | -25°C to +60°C |
| Standards Compliance | IEC 60269, GB/T 13539 |
| Application | Large PV Arrays, Battery Storage, Heavy-Duty Dual-Line Circuits |
| Installation | Snap-on mounting |
| Weight | Approx. 160g |
| Certification | CE, RoHS |
| Fuse Inclusion | Fuse links NOT included — sold separately |
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