Schneider MCB 20A 1P A9F74120 is an option among the MCB automatic circuit breakers at Bashiti Stores, designed for circuit protection against overloads and short circuits. In this option, the rated current is 20 Amperes and the number of poles is 1P. This data distinguishes the model from other alternatives in the same series; match it with the circuit requirements and do not choose a breaker with a higher current just to increase the operating margin.
Practical Benefits
- Combines the functions of disconnection during overload and short circuit into a single modular device.
- Helps distribute protection across independent circuits, aiding in panel organization and identifying the affected circuit in case of a fault.
- Choosing the correct current, number of poles, and tripping curve provides the basis for aligning the breaker with the circuit requirements.
Technical Specifications for this Model
| Brand |
Schneider Electric |
| Series |
Acti9 iC60N |
| Model Reference |
A9F74120 |
| Rated Current |
20 A |
| Number of Poles |
1P |
| Tripping Curve |
C |
| Breaking Capacity per Source Title |
6kA according to IEC/EN 60898-1 and 10kA according to IEC/EN 60947-2; check voltage conditions in the manual |
| Dimensions: W x H x D |
18 x 85 x 78.5 mm |
| Mounting |
DIN Rail |
Who Needs This Product?
Electricians, installation contractors, and homeowners or shop owners who are setting up a new panel or replacing a breaker that matches the existing circuit. Selection depends on the circuit design, cable cross-section, and installation method, not just on the device type or the shape of the breaker.
Installation and Verification Method — For Professional Technicians
The following steps outline the general workflow; the manufacturer's diagram for reference A9F74120 must be consulted to determine terminals and torque values. Work must not be performed on a circuit connected to power.
- The technician disconnects all power sources and secures them against accidental reconnection, then verifies the absence of voltage with a suitable tool.
- Matches the device reference, number of poles, current, and voltage with the panel diagram, and reviews conductor cross-sections and protection coordination.
- Mounts the unit on the rail or its designated position after ensuring compatibility, and identifies the supply and output from the manufacturer's diagram for this reference.
- Executes connections according to the tightening torque, stripping length, and wire gauges specified in the model manual; do not carry over these values from a similar device.
- Checks the integrity of the installation and connections, then closes the covers and performs the required functional and protection tests before handing over the circuit.
Frequently Asked Questions Before Buying
Does this breaker protect against earth leakage?
An MCB is intended for overload and short-circuit protection and does not replace the need for earth leakage protection. Review the necessity of an RCCB or RCBO within the panel design.
Should I replace a breaker that trips constantly with one of a higher amperage?
No. You must first identify the cause of the tripping and check the load, cables, and connections. Increasing the amperage without assessment may leave the wires without proper protection.
What is the difference between Amperage and Breaking Capacity?
Amperage is the rated current of the breaker, while breaking capacity describes the level of short-circuit current it can safely disconnect under specified voltage and standard conditions. One figure cannot replace the other.
Order from Bashiti Stores
Learn more in our Electrical Section and Circuit Breakers category. Bashiti Stores — Yousef Bashiti Company, serving individuals, companies, and projects in Jordan. For product and quantity inquiries, contact us at 0795756898 or visit our Bayader and Wahdat branches in Amman.
For Comparison within the Category
Also check out the Schneider MCB 25A 1P A9F74125 and compare the specifications to choose what suits your needs.
