HR17B Fuse Disconnect Switch | 2P/3P 32A-630A 690V Isolator
HR17B Fuse Disconnect Switch | 2P/3P 32A-630A 690V Isolator
The HR17B Series Fuse Disconnect Switch is a versatile isolator combining load break switching and integrated fuse protection, available in 2P/3P configurations with ratings from 32A to 630A. Designed for 690V AC systems, it features high-quality copper conductors, transparent fuse inspection covers, and pre-installed fuses. Ideal for industrial distribution panels, motor control centers, and commercial power systems, it provides reliable isolation and short-circuit protection.
The HR17B Series Fuse Disconnect Switch is a versatile isolator combining load break switching and integrated fuse protection, available in 2P/3P configurations with ratings from 32A to 630A. Designed for 690V AC systems, it features high-quality copper conductors, transparent fuse inspection covers, and pre-installed fuses. Ideal for industrial distribution panels, motor control centers, and commercial power systems, it provides reliable isolation and short-circuit protection.
1. Product Overview
The HR17B Series Fuse Disconnect Switch is a robust, modular isolator engineered for low-voltage AC power distribution systems. Combining safe load break isolation and integrated fuse-based short-circuit protection, this series is available in 2P/3P configurations with ratings from 32A to 630A, suitable for 690V AC systems. Featuring high-quality copper conductors, transparent fuse inspection covers, and pre-installed fuses, it delivers reliable performance for industrial, commercial, and light industrial applications.
2. Core Product Features
1. Versatile Configurations & Ratings
- Pole Options: 2P (single-phase) and 3P (three-phase) configurations for diverse system requirements
- Current Range: 32A / 63A / 100A / 160A / 250A / 400A / 630A, covering light to heavy industrial loads
- Wide Voltage Compatibility: Rated for 690V AC systems, suitable for most industrial power grids
- All-in-One Design: Integrated fuse holders eliminate the need for separate isolators and fuse bases, simplifying installation
2. Premium Electrical Performance
- High-Quality Copper Conductors: Low-resistance copper contacts ensure stable conductivity, minimal voltage drop, and long service life
- Pre-Installed Fuses: Factory-fitted fuses provide immediate short-circuit protection, reducing on-site setup time
- High Breaking Capacity: Robust construction withstands high short-circuit currents, ensuring safe fault isolation
- Low Contact Resistance: Precision-engineered contacts minimize power loss and heat generation under full load
3. Safety & User-Friendly Design
- Transparent Fuse Covers: Clear blue covers allow visual inspection of fuse status without disassembly, enabling quick troubleshooting
- Modular DIN Rail Mount: Standard 35mm DIN rail mounting for quick, tool-less installation in distribution panels
- Ergonomic Operation: Smooth, reliable switching action with clear ON/OFF status indication
- Durable Housing: Flame-retardant thermoplastic housing with excellent heat, impact, and corrosion resistance
4. Durability & Reliability
- Long Mechanical Life: Designed for repeated switching operations in high-frequency industrial environments
- Stable Performance: Copper conductors and precision contacts ensure consistent performance under varying loads
- Compliant with Standards: Manufactured to meet IEC 60947-3 requirements for safety and reliability
- Space-Saving Design: Compact form factor optimizes panel layout, with uniform dimensions across all pole counts
3. Working Conditions
This fuse disconnect switch is strictly tested to adapt to standard industrial operating environments, with clear working parameters as below:
- Ambient Temperature: -10°C ~ +55°C. Avoid working under extreme high or low temperature for a long time.
- Protection Grade: IP20, only applicable for indoor dry environments. Not for outdoor use or places with splashing water.
- Atmospheric Condition: Suitable for air without corrosive gas, flammable gas and excessive dust.
- Vibration Resistance: Adapt to normal mechanical vibration of industrial workshops; keep away from strong shock and violent vibration.
- Altitude: Normal working performance below 2000 meters above sea level.
- Power Frequency: 50Hz, matching conventional low-voltage AC power systems.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HR17B Series (HR17-32/2P, HR17-100/3P, etc.) |
| Rated Current | 32A / 63A / 100A / 160A / 250A / 400A / 630A |
| Poles | 2P / 3P |
| Rated Voltage | 690V AC |
| Frequency | 50Hz |
| Breaking Capacity | High short-circuit withstand rating (varies by model) |
| Compliance Standards | IEC 60947-3 |
| Mounting Type | 35mm DIN Rail |
| Protection Rating | IP20 |
| Housing Material | Flame-retardant thermoplastic |
| Conductive Material | High-grade copper |
| Operating Temperature | -10°C to +55°C |
5. Typical Applications
- Industrial main distribution panels and switchgear
- Commercial building power distribution systems
- Motor control centers and machinery control panels
- Manufacturing line power isolation and protection
- HVAC, pump, and heavy equipment main switches
- Renewable energy power distribution systems
- Emergency power shutdown circuits
6. Frequently Asked Questions (FAQ)
1. What is the difference between 2P and 3P configurations?
- 2P: Designed for single-phase systems, providing isolation for both live and neutral lines.
- 3P: Designed for three-phase systems, providing isolation for all three phases.
2. Are fuses included with the HR17B switch?
Yes. HR17B switches come with pre-installed fuses of the corresponding rating, providing immediate short-circuit protection out of the box.
3. Can I use this switch without the included fuses?
No. The HR17B series is designed to work with compatible HR17 series fuses. Operating without fuses will disable short-circuit protection and may damage the switch or connected equipment.
4. What is the purpose of the transparent cover?
The clear blue cover allows you to visually check if a fuse is blown without disassembling the switch, making maintenance and troubleshooting faster and safer.
5. Is this switch suitable for outdoor use?
No. The HR17B series has an IP20 protection rating, which is suitable for indoor use only. It is not waterproof and should not be exposed to rain, moisture, or direct outdoor conditions.
6. How do I replace the fuses in this switch?
- Ensure the switch is in the OFF position and power is disconnected.
- Open the transparent cover to access the fuse holders.
- Remove the old fuse and insert a new, compatible HR17 series fuse of the correct rating.
- Close the cover, restore power, and verify operation.
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
1. Product Overview
The HR17B Series Fuse Disconnect Switch is a robust, modular isolator engineered for low-voltage AC power distribution systems. Combining safe load break isolation and integrated fuse-based short-circuit protection, this series is available in 2P/3P configurations with ratings from 32A to 630A, suitable for 690V AC systems. Featuring high-quality copper conductors, transparent fuse inspection covers, and pre-installed fuses, it delivers reliable performance for industrial, commercial, and light industrial applications.
2. Core Product Features
1. Versatile Configurations & Ratings
- Pole Options: 2P (single-phase) and 3P (three-phase) configurations for diverse system requirements
- Current Range: 32A / 63A / 100A / 160A / 250A / 400A / 630A, covering light to heavy industrial loads
- Wide Voltage Compatibility: Rated for 690V AC systems, suitable for most industrial power grids
- All-in-One Design: Integrated fuse holders eliminate the need for separate isolators and fuse bases, simplifying installation
2. Premium Electrical Performance
- High-Quality Copper Conductors: Low-resistance copper contacts ensure stable conductivity, minimal voltage drop, and long service life
- Pre-Installed Fuses: Factory-fitted fuses provide immediate short-circuit protection, reducing on-site setup time
- High Breaking Capacity: Robust construction withstands high short-circuit currents, ensuring safe fault isolation
- Low Contact Resistance: Precision-engineered contacts minimize power loss and heat generation under full load
3. Safety & User-Friendly Design
- Transparent Fuse Covers: Clear blue covers allow visual inspection of fuse status without disassembly, enabling quick troubleshooting
- Modular DIN Rail Mount: Standard 35mm DIN rail mounting for quick, tool-less installation in distribution panels
- Ergonomic Operation: Smooth, reliable switching action with clear ON/OFF status indication
- Durable Housing: Flame-retardant thermoplastic housing with excellent heat, impact, and corrosion resistance
4. Durability & Reliability
- Long Mechanical Life: Designed for repeated switching operations in high-frequency industrial environments
- Stable Performance: Copper conductors and precision contacts ensure consistent performance under varying loads
- Compliant with Standards: Manufactured to meet IEC 60947-3 requirements for safety and reliability
- Space-Saving Design: Compact form factor optimizes panel layout, with uniform dimensions across all pole counts
3. Working Conditions
This fuse disconnect switch is strictly tested to adapt to standard industrial operating environments, with clear working parameters as below:
- Ambient Temperature: -10°C ~ +55°C. Avoid working under extreme high or low temperature for a long time.
- Protection Grade: IP20, only applicable for indoor dry environments. Not for outdoor use or places with splashing water.
- Atmospheric Condition: Suitable for air without corrosive gas, flammable gas and excessive dust.
- Vibration Resistance: Adapt to normal mechanical vibration of industrial workshops; keep away from strong shock and violent vibration.
- Altitude: Normal working performance below 2000 meters above sea level.
- Power Frequency: 50Hz, matching conventional low-voltage AC power systems.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HR17B Series (HR17-32/2P, HR17-100/3P, etc.) |
| Rated Current | 32A / 63A / 100A / 160A / 250A / 400A / 630A |
| Poles | 2P / 3P |
| Rated Voltage | 690V AC |
| Frequency | 50Hz |
| Breaking Capacity | High short-circuit withstand rating (varies by model) |
| Compliance Standards | IEC 60947-3 |
| Mounting Type | 35mm DIN Rail |
| Protection Rating | IP20 |
| Housing Material | Flame-retardant thermoplastic |
| Conductive Material | High-grade copper |
| Operating Temperature | -10°C to +55°C |
5. Typical Applications
- Industrial main distribution panels and switchgear
- Commercial building power distribution systems
- Motor control centers and machinery control panels
- Manufacturing line power isolation and protection
- HVAC, pump, and heavy equipment main switches
- Renewable energy power distribution systems
- Emergency power shutdown circuits
6. Frequently Asked Questions (FAQ)
1. What is the difference between 2P and 3P configurations?
- 2P: Designed for single-phase systems, providing isolation for both live and neutral lines.
- 3P: Designed for three-phase systems, providing isolation for all three phases.
2. Are fuses included with the HR17B switch?
Yes. HR17B switches come with pre-installed fuses of the corresponding rating, providing immediate short-circuit protection out of the box.
3. Can I use this switch without the included fuses?
No. The HR17B series is designed to work with compatible HR17 series fuses. Operating without fuses will disable short-circuit protection and may damage the switch or connected equipment.
4. What is the purpose of the transparent cover?
The clear blue cover allows you to visually check if a fuse is blown without disassembling the switch, making maintenance and troubleshooting faster and safer.
5. Is this switch suitable for outdoor use?
No. The HR17B series has an IP20 protection rating, which is suitable for indoor use only. It is not waterproof and should not be exposed to rain, moisture, or direct outdoor conditions.
6. How do I replace the fuses in this switch?
- Ensure the switch is in the OFF position and power is disconnected.
- Open the transparent cover to access the fuse holders.
- Remove the old fuse and insert a new, compatible HR17 series fuse of the correct rating.
- Close the cover, restore power, and verify operation.
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
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