A9F78420

Schneider Electric A9F78420 — Miniature Circuit Breaker

Schneider Electric A9F78420 IC60N Miniature Circuit Breaker 4P 20A B-Curve. The Schneider Electric A9F78420 is a robust Acti9 iC60N Miniature Circuit Breaker (MCB) designed for reliable protection in final distribution circuits. This 4-pole, 20 Ampere MCB features a B-curve trip characteristic, offering thermal-magnetic protection against overcurrents and short circuits for both AC and DC networks. It boasts impressive breaking capacities of 6000 A conforming to IEC/EN 60898-1 at 400 V AC 50/60 Hz, and 10 kA conforming to IEC/EN 60947-2 at 380-415 V AC 50/60 Hz. With a wide operational voltage range spanning 12-440 V AC and up to 250 V DC, and full suitability for isolation, the A9F78420 is a versatile solution. Its clip-on, 35 mm DIN rail mounting ensures easy installation. This Schneider Electric MCB is ideal for critical electrical infrastructure in Egyptian and Gulf industries such as oil and gas, cement production, water treatment, building services, and food and beverage processing, providing essential circuit protection and operational continuity.

Details

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Specifications

Curve code
B
Net weight
0.5 Kg
Network type
AC, DC
Mounting support
35 mm DIN rail
Poles description
4P
Tightening torque
2 N.M top or bottom
[In] rated current
20 A
Trip unit technology
Thermal-magnetic
Wire stripping length
14 Mm for top or bottom connection
Dimensions (H x W x D)
85 Mm x 72 Mm x 78.5 Mm
IP degree of protection
IP20 conforming to IEC 60529; IP40 in modular enclosure (Insulation class II) conforming to IEC 60529
Manufacturer part number
A9F78420
Suitability for isolation
Yes conforming to EN/IEC 60898-1; Yes conforming to EN/IEC 60947-2
[Ue] rated operational voltage
12...133 V AC 50/60 Hz, 220...240 V AC 50/60 Hz, 380...415 V AC 50/60 Hz, 440 V AC 50/60 Hz, <= 250 V DC
Breaking capacity (IEC/EN 60898-1)
6000 A Icn at 400 V AC 50/60 Hz
Breaking capacity (IEC/EN 60947-2)
10 KA Icu at 380...415 V AC 50/60 Hz
Ambient air temperature for operation
-35…70 °C

Product documentation

View manufacturer document (PDF)