New Original Schneider DF143C Acti9 DF 3P 32A Fuse Holder
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New Original Schneider DF143C TeSys DF 3P Fuse Holder
1. Product Overview
DF143C is an original Schneider Electric industrial modular fuse holder belonging to the premium TeSys DF series, designed for three-phase low-voltage AC power distribution circuits. It is a 3-pole DIN rail-mounted fuse carrier dedicated to accommodating standard 14 mm × 51 mm cylindrical cartridge fuses (gG general-purpose fuses and aM motor protection fuses). Integrated with a safety isolation switch structure, this unit combines fuse installation, circuit isolation and overcurrent short-circuit protection into one compact assembly. Widely applied in industrial automation control cabinets, three-phase motor power supply loops, machinery equipment panels, commercial workshop power distribution systems and auxiliary electrical circuits for production lines. It features drawer-type fuse extraction design for safe fuse replacement, stable conductive performance and excellent mechanical durability, and can be matched with auxiliary contacts and blown-fuse indicator accessories to build complete circuit protection solutions.
2. Main Functions
- Three-phase synchronous circuit isolation: The unified operating handle can cut off all three live phases simultaneously, forming a visible physical disconnection gap inside the device, which complies with international IEC safety standards for power-off maintenance, overhaul and equipment troubleshooting.
- Pole-by-pole overcurrent & short-circuit protection: Each independent pole is equipped with an individual fuse cavity; the inserted fuse will melt rapidly under overload or short-circuit faults to isolate faulty circuits and protect downstream motors, wiring and electrical loads from burnout damage.
- Drawer-type safe fuse replacement: Pull-out drawer structure allows operators to replace fuses without direct contact with live conductive parts, effectively lowering electric shock risks during maintenance work.
- Padlockable operating handle: The main toggle handle can be locked with padlocks in both ON and OFF positions to prevent unauthorized switching operations and avoid accidental power cut-on or cut-off on site.
- Expandable accessory compatibility: Reserved mounting positions for auxiliary signal contacts and blown-fuse indicator modules, which can output fault signals to PLC control systems or visually remind staff of fuse failure status.
- Universal screw terminal wiring: Screw clamping terminals support both rigid solid copper wires and stranded flexible copper wires to adapt to diversified on-site wiring layouts.
- Modular combined installation: Standard body size enables multiple holders to be arranged side by side on 35 mm DIN rails for centralized three-phase power distribution management.
3. Technical Specifications
| Item | Detailed Parameter |
|---|---|
| Full Model Number | DF143C |
| Product Series | Schneider TeSys DF Fuse Holder Series |
| Number of Poles | 3 Poles (3P) |
| Rated Operational Current | 50 A |
| Rated Operational Voltage | 690 V AC / 690 V DC, 50/60 Hz |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 8 kV |
| Applicable Fuse Dimension | 14 mm × 51 mm cylindrical cartridge fuse |
| Compatible Fuse Types | gG general distribution fuse, aM motor dedicated protection fuse |
| Rated Short-circuit Breaking Capacity | 120 kA at 400 V AC |
| Ingress Protection Grade | IP20 for terminal internal area |
| Wiring Cross-section Range | Rigid wire: 1.5 ~ 16 mm²; Flexible wire: 1 ~ 10 mm² |
| Ambient Operating Temperature | -20 °C ~ +60 °C |
| Pollution Degree | Class 3 |
| Compliance Standards | IEC 60269, IEC 60947-3, RoHS 3 Compliant |
| Mounting Method | Clip-on dual-lock system for standard 35 mm DIN top-hat rail |
| Handle Function | Padlockable at ON & OFF positions |
4. Technical Features
- High-strength flame-retardant reinforced plastic housing: Anti-arc ablation, high-temperature resistant and impact-resistant shell material ensures long-term stable operation in harsh industrial workshop environments.
- Silver-plated internal conductive contacts: Ultra-low contact resistance eliminates abnormal heating under continuous rated load, and guarantees balanced three-phase current transmission performance.
- Dual-lock DIN rail mounting structure: Firm clamping design prevents sliding or falling off caused by equipment vibration during long-term operation.
- Safe visible isolation gap: Clear mechanical breaking point after switching off fully meets electrical safety maintenance requirements stipulated by global low-voltage codes.
- Humanized drawer-type fuse carrier: Ergonomic pull-out structure simplifies fuse replacement steps and improves on-site maintenance efficiency.
- Strong environmental adaptability: No performance attenuation under temperature fluctuation, slight condensation and dust accumulation conditions.
- Complete expandable accessory ecosystem: Perfectly matched with auxiliary contacts, blown-fuse indicators and interconnection kits of the same series for flexible system upgrading.
5. Product Dimensions and Net Weight
| Parameter | Value |
|---|---|
| Overall Width | 54 mm |
| Overall Height | 128 mm |
| Overall Depth | 85 mm |
| Single Unit Net Weight | 570 g |
| Recommended Terminal Screw Tightening Torque | 1.5 N·m |
| Applicable Mounting Rail | 35 mm standard DIN rail |
6. Ten Schneider Similar-Function TeSys DF Series Fuse Holders
All listed products are original Schneider DIN rail-mounted fuse holders for three-phase/single-phase circuit isolation and fuse protection with different poles, current ratings and configurations:
- DF141C: 1P 50A single-pole fuse holder for single-phase live wire independent protection circuits
- DF142C: 2P 50A two-pole variant for single-phase live and neutral dual-line power distribution loops
- DF143NC: 3P+N four-wire fuse holder with additional neutral pole for three-phase four-wire systems
- DF143VC: 3P 50A fuse holder pre-installed with blown-fuse indicator lamps for each phase
- DF103: 3P 32A compact fuse holder adapted for 10×38 mm small-size cylindrical fuses
- DF223C: 3P 125A large-current heavy-duty fuse holder for main three-phase incoming power loops
- DF143C-H: High-temperature resistant customized version suitable for high-heat production workshop environments
- DF141NC: 1P+N single-phase plus neutral fuse holder for commercial and building auxiliary power circuits
- DF143C+AM: 3P fuse holder assembled with auxiliary signal contacts for remote fault feedback
- DF221C: 1P 63A medium-current single-pole fuse holder for general small-power control cabinets
WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
Where is your company located?
We are located next to Shanghai, the largest city in China, and Kunshan, the first economic county in China. With convenient transportation and developed logistics, it provides a good geographical advantage for our electronic components sales business.
What types of electronic components does your company mainly sell?
We are committed to providing many types and brands of electronic components, including but not limited to Sensors, Switches & Relays, Connectors, Circuit Protectio, Power Supplier & Cable, etc. We have established relationships with many well-known electronic component manufacturers. We have established long-term and stable relationships with many well-known electronic component manufacturers to ensure that the products we sell are of reliable quality and reasonable price.
What are the prices of your products?
Our product prices vary according to market conditions and product models. We are committed to providing high quality electronic components at fair and reasonable prices, and offer our customers a variety of incentives and flexible purchasing methods.
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You can contact our customer service staff directly by phone, whatsapp, email, our official website. We support a variety of payment methods, and provide you with fast and safe logistics and distribution services.
How do you guarantee the quality of your products?
We attach great importance to product quality, all the electronic components we sell come from regular channels and undergo strict quality testing. We promise to provide customers with high-quality electronic components, and provide perfect after-sales service to ensure that customers have no worries in the process of use.
If I am not satisfied with the electronic components I purchased, can I return them?
We provide perfect after-sales service, if you are not satisfied with the purchased electronic components, you can return or exchange them within the specified time. Please refer to our official website or consult our customer service staff for the specific return policy and process.
Can your company provide technical support and solutions?
We have a professional technical team that can provide technical support and solutions for our customers. Whether you encounter any problems in choosing or using the products, we will be happy to answer your questions and provide professional technical support.
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You can contact our customer service personnel through the online customer service system on our official website, telephone, e-mail or social media platforms. Our customer service staff will provide you with professional services and answer any questions you may have.
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In order to give back to our customers, we will organize various promotions from time to time, including discounts, full reductions, giveaways and so on. Please keep an eye on our official website or social media platforms to stay up-to-date with the latest promotions.
