Schneider MCB 40A 3P A9K24340 is an option among MCB automatic circuit breakers at Bashiti Stores, designed to protect the circuit from overload and short circuits. In this version, the rated current is 40 amps and the number of poles is 3P. These data distinguish the model from others in the same series; match them with the circuit requirements and do not choose a higher-current breaker just to increase the operating margin.
Practical Benefits
- Combines the functions of overload and short-circuit protection in a single modular device.
- Distributing protection across independent circuits helps organize the panel and identify the affected circuit in the event of a fault.
- Selecting the correct current, number of poles, and tripping curve provides a basis for matching the breaker to the circuit's requirements.
Technical Specifications for This Model
| Brand |
Schneider Electric |
| Series |
Acti9 iK60N |
| Model Reference |
A9K24340 |
| Rated Current |
40 A |
| Number of Poles |
3P |
| Tripping Curve |
C |
| Breaking Capacity per Source Title |
6kA |
| Stated Operating Voltage |
400VAC |
| Dimensions: W x H x D |
54 x 85 x 78.5 mm |
| Stated 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. The selection depends on the circuit design, cable cross-section, and installation method, not just on the type of device or its shape alone.
Installation and Verification Method — For Professional Technicians
The following steps illustrate the general work sequence; the manufacturer's diagram for reference A9K24340 should be used to determine terminals and tightening values. Do not perform work on a circuit connected to a power supply.
- The technician disconnects all power sources and secures them against reactivation, 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 the conductor cross-section 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 the connections with the tightening torque, stripping length, and wire cross-sections specified in the model manual; do not transfer these values from a similar device.
- Checks the integrity of the mounting and connections, then closes the covers and performs the required functional and protection tests before handing over the circuit.
- Tests the installation and connections, closes the panels, and performs the necessary operational and protection tests before the circuit is commissioned.
FAQs Before Buying
Does this breaker protect against earth leakage?
An MCB is designed for overload and short circuits and does not replace earth leakage protection. The need for an RCCB or RCBO should be reviewed within the panel design.
Should I replace a breaker that trips constantly with one of a higher amperage?
No. First, identify the cause of the tripping and inspect the load, cable, and connections. Increasing the amperage without proper study may leave the wires without appropriate 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 interrupt under specified voltage and standard conditions. One figure cannot be replaced by the other.
Order from Bashiti Stores
Learn more in the Electrical Section and Circuit Breakers category. Bashiti Stores — Yousef Bashiti Co., serving individuals, companies, and projects in Jordan. For inquiries about the product and quantities, contact 0795756898 or visit our Bayader and Wahdat branches in Amman.
For Comparison within the Category
Also, check out the Schneider MCB 63A 3P A9K24363 and compare specifications to choose what fits your needs.
