| CATALOG NUMBER |
TD3-D |
| Manufacturer |
Eaton Moeller |
| Product Name |
Eaton Bussmann series low voltage NH fuse base |
| Catalog Number |
TD3-D |
| Model Code |
NH3 Triple Pole Base CE |
| UPC |
051712371636 |
| EAN |
5027590589468 |
| Product Length/Depth |
220 mm |
| Product Height |
239 mm |
| Product Width |
137.5 mm |
| Product Weight |
2080 g |
| Warranty |
1 year limited |
| Compliances |
Contact factory |
EATON TD3-D NH3 Triple Pole Base CE
1. Product Name
EATON TD3-D NH3 Triple Pole Base CE (630A, 690V AC, DIN 35mm Rail Mount, NH3 Fuse Compatible)
2. Product Introduction
The EATON TD3-D NH3 is a CE-certified triple-pole fuse base engineered for low-voltage industrial circuit protection. Rated at 630A current and 690V AC, it is fully compatible with NH3 fuses, supports standard DIN 35mm rail mounting, and delivers reliable three-phase circuit safeguarding for industrial power systems.
3. Product Description
The EATON TD3-D NH3 Triple Pole Base CE is a premium industrial circuit protection component designed and manufactured by Eaton, a global pioneer in power management and electrical safety solutions. As a core part of Eaton’s low-voltage protection portfolio, this triple-pole base is specifically engineered to address the demands of three-phase electrical systems in industrial, commercial, and institutional environments, where reliable circuit protection is critical to preventing equipment damage, minimizing downtime, and ensuring operational safety.
At its foundation, the TD3-D NH3 is built to handle high electrical loads, boasting a current rating of 630A and a voltage rating of 690V AC. This robust specification makes it ideal for three-phase power distribution systems—common in industrial settings where heavy machinery, motors, and automation equipment rely on stable, high-capacity power delivery. The triple-pole (3P) configuration is a defining feature, as it ensures simultaneous protection for all three phases of the electrical circuit. Unlike single-pole or dual-pole bases that leave gaps in protection, the TD3-D NH3 covers every phase, eliminating the risk of phase-to-phase faults or voltage imbalances that can cripple industrial operations and damage expensive equipment.
A key technical highlight of the TD3-D NH3 is its seamless compatibility with NH3 fuses. NH3 fuses (also known as “knife-blade fuses”) are industry standards for high-current industrial applications, valued for their exceptional breaking capacity, fast fault response, and ability to withstand transient currents. By designing the base to accommodate NH3 fuses, Eaton ensures versatility: users can integrate the TD3-D NH3 into existing systems that already use NH3 fuses (whether Eaton-branded or third-party) without costly overhauls, or pair it with Eaton’s Bussmann NH3 fuses for a fully optimized, factory-matched protection solution. This compatibility streamlines inventory management and reduces the complexity of system upgrades.
The CE certification of the TD3-D NH3 is a testament to its adherence to strict European safety and performance standards. CE marking ensures the product meets the requirements of the Low-Voltage Directive (LVD) and other relevant EU regulations, confirming its safety, electromagnetic compatibility (EMC), and reliability for use across the European Union and global markets that recognize CE standards. This certification provides users with confidence that the base complies with international best practices, simplifying regulatory compliance for facilities operating in multi-regional markets.
Durability and resilience are embedded in the TD3-D NH3’s design. Constructed from high-grade, flame-retardant thermoplastic materials, the base offers excellent resistance to heat, impact, and chemical exposure—common challenges in industrial environments such as manufacturing plants, warehouses, and power distribution rooms. The flame-retardant properties prevent the spread of fire in the event of an electrical fault, adding an extra layer of safety. Additionally, the base features precision-engineered electrical contacts with high conductivity and corrosion resistance, ensuring stable current transmission even under prolonged use. These contacts minimize contact resistance, reducing the risk of overheating and ensuring consistent performance over the product’s long service life.
Installation and integration are made effortless by the TD3-D NH3’s compliance with standard DIN 35mm rail mounting. DIN 35mm rails are the industry benchmark for mounting electrical components, allowing for quick, tool-efficient installation in control panels and enclosures. The base’s snap-on design eliminates the need for custom drilling or mounting brackets, cutting down on installation time and labor costs. This design also ensures compatibility with other DIN rail-mounted components—such as circuit breakers, contactors, and programmable logic controllers (PLCs)—enabling seamless integration into existing electrical panels and new system designs alike.
The TD3-D NH3 also prioritizes user safety during maintenance. It features a clear, accessible fuse compartment that allows for easy fuse inspection and replacement without disassembling the entire base. The compartment’s design prevents accidental contact with live components, reducing the risk of electrical shock for maintenance personnel. Additionally, the base’s compact footprint optimizes space in control panels, a critical advantage in crowded industrial enclosures where space is at a premium.
Eaton’s commitment to quality is evident in the rigorous testing each TD3-D NH3 undergoes before leaving the factory. Every unit is subjected to stringent performance tests, including current-carrying capacity checks, voltage tolerance assessments, and environmental resistance trials (such as temperature cycling and humidity exposure). These tests ensure the base operates reliably under extreme conditions, from high-temperature manufacturing floors to dusty power distribution rooms. Furthermore, the TD3-D NH3 is backed by Eaton’s global technical support network, providing users with access to detailed datasheets, installation guides, and troubleshooting resources to ensure optimal performance and minimize downtime.
In summary, the EATON TD3-D NH3 Triple Pole Base CE is a robust, versatile, and user-friendly solution for protecting low-voltage three-phase electrical systems. Its high current/voltage ratings, NH3 fuse compatibility, CE certification, DIN rail mounting, and durable construction make it an indispensable component for industrial facilities, commercial buildings, and institutional sites where safety, reliability, and efficiency are non-negotiable.
4. Product Advantages
The EATON TD3-D NH3 Triple Pole Base CE stands out as a superior choice in industrial circuit protection, offering a range of distinct advantages that address the practical needs of users and exceed the capabilities of standard fuse bases.
1. CE Certification for Global Compliance & Safety
The CE certification is a primary advantage of the TD3-D NH3, as it confirms compliance with strict European safety, EMC, and performance standards. This certification ensures the base meets the requirements of the EU Low-Voltage Directive (LVD) and other international regulations, making it suitable for use in global markets—from the EU to regions that recognize CE marking. For businesses operating across borders, this eliminates the need to source region-specific components, simplifying inventory management and regulatory compliance. More importantly, CE certification guarantees that the base has undergone rigorous testing to ensure it is safe for personnel and compatible with other electrical systems, reducing the risk of accidents and equipment failure.
2. High Current & Voltage Capacity for Heavy-Duty Applications
With a 630A current rating and 690V AC voltage rating, the TD3-D NH3 is engineered to handle the high loads of industrial three-phase systems. Unlike lower-rated fuse bases that may trip or overheat under heavy current, this base maintains stable performance even when powering large motors, compressors, or automation equipment. This high capacity is critical for industrial facilities where power demand fluctuates—such as manufacturing plants during peak production hours—ensuring that the electrical system remains protected without disrupting operations. It also future-proofs systems, allowing for upgrades to more powerful equipment without replacing the fuse base.
3. Triple-Pole (3P) Configuration for Comprehensive Protection
The 3P design of the TD3-D NH3 provides unmatched protection for three-phase circuits by safeguarding all three phases simultaneously. In industrial settings, three-phase systems are the backbone of operations, and a fault in one phase can cascade into system-wide failures or equipment damage. The TD3-D NH3 ensures that faults (e.g., short circuits, overcurrents) in any phase trigger immediate, synchronized disconnection of all three phases, preventing voltage imbalances and secondary faults. This is far more reliable than single-pole bases, which leave two phases unprotected, or dual-pole bases, which miss one phase—making the TD3-D NH3 essential for maintaining uninterrupted industrial operations.
4. Seamless NH3 Fuse Compatibility for Versatility
Compatibility with NH3 fuses is a key advantage, as NH3 fuses are widely used in industrial applications for their high breaking capacity and fast fault response. The TD3-D NH3 works seamlessly with both Eaton’s Bussmann NH3 fuses and third-party NH3 fuses, giving users flexibility in system design and maintenance. This compatibility is particularly valuable for facilities that already use NH3 fuses, as it allows them to upgrade their protection system without replacing existing fuses or reconfiguring circuits. It also simplifies inventory management, as users can standardize on NH3 fuses across multiple systems, reducing the number of fuse types needed.
5. DIN 35mm Rail Mounting for Easy Installation & Integration
The TD3-D NH3’s compliance with DIN 35mm rail mounting simplifies installation and integration into electrical panels. DIN 35mm rails are the industry standard for mounting electrical components, so the base can be quickly snapped into place without custom brackets or drilling—saving time and labor costs. This design also ensures compatibility with other DIN rail-mounted components, such as circuit breakers, contactors, and PLCs, allowing for a clean, organized panel layout. For electricians and maintenance teams, this means faster installation, easier access for maintenance, and reduced downtime when upgrading or repairing the system.
6. Durable Construction for Long-Lasting Reliability
Built from high-grade, flame-retardant thermoplastic materials, the TD3-D NH3 is designed to withstand the harsh conditions of industrial environments. It resists heat, impact, dust, and chemical exposure—common in manufacturing plants, warehouses, and power distribution rooms—ensuring long-term performance without degradation. The precision-engineered electrical contacts offer low resistance and high corrosion resistance, preventing overheating and ensuring stable current transmission even under prolonged use. This durability reduces maintenance costs and extends the product’s service life, making the TD3-D NH3 a cost-effective investment over time.
7. User-Friendly Design for Safe Maintenance
The TD3-D NH3 features a user-centric design that prioritizes safety during maintenance. The accessible fuse compartment allows for quick fuse inspection and replacement without exposing live components, minimizing the risk of electrical shock. The clear labeling and compact footprint also make it easy to identify and access in crowded control panels, reducing maintenance time and ensuring that repairs can be completed efficiently. For facilities operating 24/7, this means less downtime and faster恢复 of critical operations.
In conclusion, the EATON TD3-D NH3 Triple Pole Base CE offers a powerful combination of compliance, capacity, protection, versatility, and durability—making it an ideal choice for industrial users seeking a reliable, long-lasting solution for three-phase circuit protection.
5. Use Scenarios
The EATON Sc3-D NH3 Triple Pole Base CE is a highly versatile component that excels in a wide range of industrial, commercial, and institutional applications, thanks to its robust specifications, CE certification, and compatibility with NH3 fuses. Below are key scenarios where the base delivers exceptional value:
Industrial Manufacturing Facilities
Industrial manufacturing plants—such as automotive assembly lines, steel mills, and plastic extrusion facilities—rely on three-phase power to operate heavy machinery, motors, and automation systems. The TD3-D NH3 is perfectly suited for this environment, as its 630A capacity handles the high current demands of equipment like conveyor belts, hydraulic presses, and injection molding machines. For example, in an automotive plant, the base can be installed in the control panel of a robotic welding station. The triple-pole protection ensures that a short circuit in one phase of the robot’s power supply triggers immediate disconnection of all three phases, preventing damage to the robot’s servo drives and PLCs. The CE certification guarantees compliance with strict safety standards, while the durable construction resists metal shavings and welding fumes—common in automotive manufacturing—ensuring long-term reliability.
Power Distribution Cabinets & Switchgear
Low-voltage power distribution cabinets and switchgear are the nerve centers of industrial and commercial electrical systems, distributing power to multiple circuits and equipment. The TD3-D NH3 is an essential component in these setups, as it protects the outgoing three-phase circuits that power machinery, lighting, and HVAC systems. In a large manufacturing facility’s central power distribution room, for instance, the base can be mounted on DIN rails inside the main switchgear, safeguarding the circuit feeding a production line. Its 690V AC rating handles the high voltage of the distribution system, while the NH3 fuse compatibility ensures fast response to overcurrents caused by equipment overloads. The compact design optimizes space in crowded cabinets, and the easy installation simplifies maintenance when upgrading or replacing fuses.
Commercial & Institutional Buildings
Large commercial buildings (e.g., shopping malls, office towers) and institutional facilities (e.g., universities, hospitals) use three-phase power for HVAC systems, elevators, and backup generators. The TD3-D NH3 is ideal for protecting these critical systems, where downtime can disrupt operations or compromise safety. In a hospital, for example, the base can be installed in the electrical panel powering the HVAC system’s chiller units. The triple-pole protection ensures that a fault in one phase doesn’t shut down the entire chiller system, maintaining temperature control in patient rooms and operating theaters. The CE certification meets healthcare facility safety standards, and the durable construction resists dust and humidity in mechanical rooms, ensuring reliable performance. For shopping malls, the base can protect the three-phase circuit feeding escalators and elevators, preventing unexpected outages that inconvenience visitors and disrupt business.
Industrial Automation Systems
Industrial automation systems—including PLCs, servo drives, and robotic arms—depend on stable three-phase power to maintain precision and efficiency. The TD3-D NH3 plays a critical role in protecting these systems, as even minor electrical faults can cause costly downtime or damage to sensitive automation components. In a food packaging plant, for example, the base can be installed in the control panel of a automated packaging line. The line’s motors, sensors, and PLCs operate on three-phase power, and the TD3-D NH3’s 630A capacity handles the combined load. If a short circuit occurs in a conveyor motor, the base quickly disconnects all three phases, preventing damage to the PLC and ensuring the line can be restarted once the fault is resolved. The NH3 fuse compatibility ensures fast fault response, minimizing downtime and reducing product waste.
Mining & Heavy Industry
Mining operations and heavy industry (e.g., cement plants, quarries) operate in some of the harshest environments, with extreme temperatures, dust, and vibration. The TD3-D NH3’s durable construction makes it suitable for these conditions, as it resists dust ingress and mechanical impact. In an underground mine, for instance, the base can be installed in the electrical panel of a mining pump—critical for removing water from the mine. The pump runs on three-phase power, and the TD3-D NH3’s 630A rating handles the pump’s high current demand. The triple-pole protection prevents phase faults that could damage the pump motor, while the flame-retardant material reduces fire risk in the confined mine environment. The CE certification ensures compliance with mining safety regulations, giving operators confidence in the base’s reliability.
Renewable Energy Systems
Renewable energy facilities (e.g., solar farms, wind turbines) use three-phase power for inverters, transformers, and grid connection systems. The TD3-D NH3 is well-suited for protecting these systems, as it can handle the high currents generated by renewable energy sources. In a solar farm’s inverter station, for example, the base can be installed in the electrical panel connecting the inverter to the grid. The 690V AC rating matches the voltage of the grid connection, and the triple-pole protection safeguards against overcurrents caused by fluctuations in solar irradiance. The NH3 fuse compatibility ensures fast fault response, protecting the inverter from damage and maintaining grid stability. The durable construction resists outdoor elements (when installed in enclosures), ensuring long-term performance in solar farm environments.
In conclusion, the EATON TD3-D NH3 Triple Pole Base CE is a versatile, reliable solution for protecting three-phase electrical systems across industrial, commercial, and institutional applications. Its high capacity, CE certification, NH3 fuse compatibility, and durable design make it an essential component for ensuring safety, minimizing downtime, and optimizing operational efficiency.
