Vertical fuse switch disconnector holder block | 3P | 630A | 690V | for NH3 fuses | for panel mounting

Technical Specifications:
1. Electrical Parameters:
Rated Operating Voltage (Ue): AC400V / AC500V / AC690V
Rated Operating Current (Ie): 630A (AC400V/AC500V), 500A (AC690V)
Thermal Steady-State Current (Ith): 630A (AC400V/AC500V), 500A (AC690V)
Utilization Category: AC-23B, AC-22B, AC-21B
Limited Short-Circuit Current (Iq): 100 kA (AC400V/AC500V), 50 kA (AC690V)
Insulation Voltage (Ui): 1000V
Impulse Withstand Voltage (Uimp): 12 kV
Frequency: 50/60 Hz
Electrical Durability: 200 cycles
2. Mechanical Data:
Mechanical Durability: 800 cycles
Copper Busbar Spacing: 185 mm
Protection Degree: IP20 (open state), IP30 (closed state)
Operating Temperature: -5°C to +55°C
Operating Mode: Continuous operation
Control: Handle-operated
Mounting Type: Vertical
Operating Altitude Above Sea Level: ≤2000 m
Pollution Degree: 3
Overvoltage Category: III, IV
3. Fuse Data (RT16NTNH – GB/T13539.2, IEC 60269-2):
Operating Current (In): 630A (AC400V/AC500V), 500A (AC690V)
Power Loss (P): 40W (AC400V), 48W (AC500V), 60W (AC690V)
4. Additional Features:
Electronic Fuse Monitoring System (EFM) – optional installation.
Micro switch for opening and closing signal outputs – optional integration.
Application:
Industrial power distribution systems
Electrical switchboards and substation equipment
Overload and short-circuit protection
Fuse-based load disconnection in high-power electrical equipment
Energy, manufacturing, and industrial facilities requiring reliable current disconnection
Pros:
High short-circuit current rating – up to 100 kA, ensuring a high level of protection.
Powerful current disconnection up to 630A – suitable for high-load systems.
Integrable EFM module – allows electronic monitoring of fuse status.
Compact vertical mounting – saves space in electrical panels.
High insulation level (1000V) and impulse voltage resistance (12 kV).
Good mechanical resistance – up to 800 cycles, ensuring a long service life.
Cons:
Requires an additional fuse selection – no built-in fuse, must be purchased separately.
Vertical mounting only – may be inconvenient in certain switchboard configurations.
Proper connection tightening required – to avoid poor contact issues.
The vertical fuse disconnector holder is a high-quality electrical isolator designed for reliable power network protection against overloads and short circuits. This device is particularly suitable for industrial power distribution systems, where a high current disconnection capacity and reliable protection are required. With additional accessories such as an electronic fuse monitoring system (EFM) or micro switches for signaling, this model can be efficiently adapted to various electrical installations.