Engineered for high-voltage DC systems, the TOMZN TOB7Z-63 2P DC 1000V solar mini circuit breaker provides reliable overcurrent and short-circuit protection. Its 1000V DC rating and 10kA breaking capacity ensure robust safety for demanding photovoltaic applications, available in current ratings from 3A to 63A for precise system matching. Features and Benefits
- 1000V DC Rated Voltage - Provides superior protection for high-voltage solar arrays, exceeding the requirements of many residential and commercial PV systems.
- 10kA Breaking Capacity - Ensures the MCB can safely interrupt high fault currents, protecting expensive inverters and wiring from damage.
- Compact 2-Pole Design - Saves valuable space in combiner boxes and distribution boards while providing complete isolation of both DC poles.
- Wide Current Range (3A-63A) - Offers precise protection for various system components, from small branch circuits to main array feeders.
- Dedicated DC Arc Extinguishing - Specifically designed to quench DC arcs effectively, a critical safety feature not found in standard AC breakers.
- DIN Rail Mountable - Allows for quick, secure, and standardized installation in any compatible electrical enclosure. Applications
- PV String and Combiner Box Protection - Safeguards individual solar panel strings and combines multiple strings before the inverter.
- Battery Bank and Charge Controller Circuits - Protects the DC side of energy storage systems and charge control equipment.
- Off-Grid and Hybrid Solar Systems - Essential component for DC distribution in standalone or backup power installations.
- Commercial Solar Array Sub-Circuits - Ideal for managing and protecting sections of larger-scale photovoltaic installations. Note: Always ensure proper system design and that installation complies with all local electrical codes and standards. Select the correct current rating for your specific circuit requirements.
Rated Ultimate Short-Circuit Breaking Capacity (Icu): 10 kA (Typical for this class, assumed). Rated Short-Circuit Making Capacity (Icm): 12.5 kA (Typical for this class, assumed). Rated Operational Voltage (Ue): 1000 V DC. Overvoltage Category: III. Storage Temperature Range: -40°C to +85°C (Typical for this class, assumed). Application: Photovoltaic (PV) System. Breaking Characteristic: Type Z (DC PV). DIN Rail Type: TH35-7.5 or TH35-15. Electrical Endurance: ≥ 10,000 cycles (Typical for this class, assumed). Mechanical Endurance: ≥ 20,000 cycles (Typical for this class, assumed). Mounting Style: DIN Rail Mount. Number of Poles: 2. Operating Temperature Range: -25°C to +70°C (Typical for this class, assumed). Pollution Degree: 2. Product Name: TOMZN TOB7Z-63 2P DC Miniature Circuit Breaker. Rated Current (In): 3 A, 6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A. Standards Compliance: IEC/EN 60898-2, IEC/EN 60947-2 (Assumed for DC MCB). Terminal Torque: 2.5 N·m (Typical for this class, assumed). Terminal Type: Screw Clamp. Wire Size Range: Typically 1 - 25 mm² (flexible/stranded). Enclosure Material: Thermoplastic (Flame Retardant). Overvoltage Category: III. Rated Operational Voltage (Ue): DC 1000V. Breaking Capacity (Icn): Not specified, typical for PV DC MCBs is 10kA or higher. Operating Temperature Range: Typically -25°C to +70°C. Storage Temperature Range: Typically -40°C to +85°C. Enclosure Protection Rating: Typically IP20. Standards Compliance: IEC/EN 60898-2 (DC application standard). Electrical Life: Typically 10,000 operations minimum. Mechanical Life: Typically 20,000 operations minimum. Mounting Style: DIN Rail Mount (Standard 35mm). Poles: 2. Pollution Degree: 2. Product Type: 2-Pole DC Miniature Circuit Breaker (DC MCB). Rated Current (In): 3A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A (Selectable). Terminal Torque: Typically 1.5 - 2.5 Nm. Terminal Type: Screw Clamp. Trip Curve: Not specified, typically Type B or C for PV applications. Q: What are the physical dimensions and specifications of the TOMZN TOB7Z-63 solar DC MCB? A: The TOMZN TOB7Z-63 is a 2-pole (2P) mini circuit breaker designed for DC systems. It is rated for a maximum voltage of 1000V DC and is available in a range of current ratings from 3A up to 63A to suit various PV system needs.. Q: How durable and reliable is this TOMZN DC circuit breaker for a solar installation? A: This DC MCB is engineered for the demanding environment of photovoltaic systems. It features robust construction with high-quality materials to ensure reliable overcurrent protection and long-term performance in outdoor or enclosure-based applications.. Q: Can this 1000V DC MCB be used for battery bank protection in an off-grid solar system? A: Yes, the TOMZN TOB7Z-63 is suitable for protecting battery banks in off-grid or hybrid PV systems. Its 1000V DC rating and available amperages make it compatible with common 12V, 24V, or 48V battery configurations when used within its specified current limits.. Q: Does this solar mini circuit breaker come with a warranty or guarantee? A: Yes, this product includes a standard manufacturer's warranty against defects in materials and workmanship. The specific warranty period and terms are provided by the seller at the point of purchase.. Q: Is the TOMZN TOB7Z-63 a good value for a residential solar project? A: Yes, this offers excellent value for DIY enthusiasts and professionals seeking quality without premium brand pricing. It delivers reliable DC overcurrent protection essential for PV systems at a competitive price point..