Eaton FAZ-B20/1 B 20A 6kA 1P
- Eaton FAZ-B20/1 overcurrent circuit breaker, 1-pole, for circuit protection against overload and short circuit. Characteristic B, rated current 20 A, short-circuit capacity 6 kA at 230/400 V AC.
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Moeller Eaton FAZ-B20/1 1-pole overcurrent circuit breaker, characteristic B, 20 A, 6 kA
Eaton's FAZ-B20/1 overcurrent circuit breaker is a 1-pole installation protection with characteristic B and rated current of 20 A, designed to protect circuits in low-voltage installations. The apparatus provides fast and selective shutdown of short-circuit and overload currents, meeting the requirements of IEC/EN 60898-1.
- Rated current 20 A with tripping characteristic B
- Short-circuit capability of 6 kA at 230/400 V AC
- 1 protected pole, mounting on DIN rail 35 mm
- Possibility of attaching accessories (auxiliary contacts, triggers)
- Meets the requirements of IEC/EN 60898-1 and VDE 0641
- Compact modular housing with a width of 1 module (18 mm)
Application and protective functions
The FAZ-B20/1 circuit breaker is designed to protect conductors and loads in residential, commercial and industrial installations against overloads and short circuits. The B characteristic provides fast tripping for typical lighting and socket circuits where inrush currents are small. The apparatus disconnects the faulty circuit, reducing the risk of overheating wires and fire, and allowing quick restoration of power after the cause of tripping has been removed.
The modular design allows easy installation and removal on a standard DIN rail in switchboards. A master switch with clear indication of the on/off position allows manual control of the circuit, and integrated arc extinguishing elements ensure safe shutdown even at high short-circuit currents. The FAZ-B20/1 works with accessories such as auxiliary contacts, rising and undervoltage triggers for integration into control and signaling systems.
Construction, mounting and expLoatation
The housing of the FAZ-B20/1 circuit breaker is made of durable, flame-retardant insulating plastic, resistant to typical conditions of expLoatation in low-voltage switchgear. The width of the apparatus is 18 mm (1 module), which allows the compact installation of multiple protections next to each other. The connection terminals are suitable for copper conductors of typical cross-sections for circuits up to 20 A, ensuring a secure and durable electrical contact.
Mounting is via a latch on a 35 mm DIN rail, with easy unlocking in case the switchgear needs to be replaced or expanded. The front panel is marked with the manufacturer, type of apparatus, rated current and tripping characteristics for easy identification in expLoatation and service. The apparatus is suitable for operation in the standard ambient temperature range provided for Eaton modular apparatus and for use in installations that comply with applicable standards and regulations.
| Parameter | Value |
|---|---|
| Manufacturer | Eaton (formerly Moeller) |
| Series | FAZ |
| Type of apparatus | Modular overcurrent circuit breaker (MCB) |
| Commercial designation | FAZ-B20/1 |
| Rated current In | 20 A |
| Tripping characteristic curve | B |
| Number of poles | 1 |
| Number of poles protected | 1 |
| Rated AC operating voltage | 230/400 V AC |
| Rated frequency | 50/60 Hz |
| Short-circuit capacity Icn | 6 kA (according to IEC/EN 60898-1) |
| Standards | IEC/EN 60898-1, VDE 0641 (and relevant national editions) |
| Mounting type | On a 35 mm DIN rail |
| Instrument width | 1 module (18 mm) |
| Possibility of attaching accessories | Yes, auxiliary contacts, surge and undervoltage triggers (compatible with FAZ series) |
| Protection function | Protection against overload and short circuit in low-voltage circuits |
| Operating environment | Residential, commercial and industrial installations (inside switchgear) |
Eaton's FAZ-B20/1 overcurrent circuit breaker is a reliable protective element for modern switchgear, combining a compact design with a high level of safety. Its compliance with international standards and expandability with accessories make it ideal for a wide range of installation applications.
FAQ (customer)
- Q: Is the FAZ-B20/1 suitable for protecting socket circuits at home?
A: Yes, the B characteristic and 20 A rating make it suitable for typical domestic socket and lighting circuits, provided the wiring cross-section and local regulations allow 20 A protection. - Q: Can I install this breaker myself?
A: Installation of MCBs should be carried out only by a qualified electrician who can verify compatibility with your installation and appLicable standards. - Q: Does this breaker fit a standard domestic distribution board?
A: It has a 1-module (18 mm) width and is designed for 35 mm DIN rail, which is standard in most modern distribution boards. - Q: Can this MCB be used in three-phase installations?
A: It can be used as protection for a single phase within a three-phase system; for full three-phase protection, multipLe poles or a multi-pole device are required. - Q: Does the breaker show clearly if it is ON or OFF?
A: Yes, the front actuator has clear ON/OFF position indication for easy status checking. - Q: Is it compatible with Eaton auxiliary contacts?
A: Yes, it is designed to work with Eaton auxiliary and signal accessories dedicated to the FAZ series.
FAQ (expert)
- Q: What standard short-circuit breaking capacity does the FAZ-B20/1 provide?
A: It offers a 6 kA breaking capacity in accordance with IEC/EN 60898-1 at 230/400 V AC. - Q: What is the tripping curve range for the B characteristic?
A: The B curve typically trips magnetically between 3 and 5 times the rated current, suitable for low inrush-current loads. - Q: Can I mount signal and shunt trip accessories on this device?
A: Yes, the MCB is prepared for side-mounting of Eaton FAZ-compatible auxiliary contacts and shunt/undervoltage releases. - Q: Is there any limitation for use in industrial networks with high prospective short-circuit currents?
A: The device must be used within its 6 kA breaking capacity; if the prospective short-circuit current is higher, back-up protection or devices with higher Icn are required. - Q: What is the module width and rail type for panel design?
A: The unit occupies 1 standard 18 mm module and is designed for mounting on a 35 mm DIN rail according to EN 60715. - Q: Is the device suitable as the only means of isolation?
A: It provides switching and protective functions, but use as a main isolator must compLy with local regulations and may require dedicated isolating devices.
Reviews
- Reliable breaker, used it in several small commercial panels with no nuisance tripping so far.
- Compact and easy to mount, works well with other Eaton modular devices in the same board.
- Good quality terminals and clear markings, installation was straightforward.
- Used as protection for lighting circuits in an apartment renovation, no issues reported by the client.
- The ability to add auxiliary contacts is very useful for integrating with control systems.
- Feels robust compared with some generic brands, worth the slight price premium.
- Performs as specified in tests, trip characteristics are consistent across batches.
- Ideal for standard domestic appLications where a B-curve 20 A breaker is required.
- Service technicians appreciate the clear ON/OFF indication and easy identification of the type.
- Good choice for small distribution boards with limited space thanks to the 1-module width.