A3N 400 MF 320-3840 3p F F

Product ID:70636
Updated: 2026/4/4
ABB A3N 400 MF 320-3840 3p F F

Key Features

  • 1Withstand high short-circuit currents up to 187 kA at 240 V AC. 2、Ensure reliable operation with a dedicated magnetic release mechanism. 3、Protect transformers, generators, and installations effectively. 4、Achieve long service life with 2000 electrical cycles. 5、Meet key IEC standards for safety and compliance.
Product Details
A3N 400 MF 320-3840 3p F F
ABB

Technical Specifications

Detailed engineering parameters

ParameterValueParameterValue
Environmental Information
1SDL000185R001 9AKK108467A6707
Product Net Width
139.5 mm
Product Net Height
205 mm
Product Net Depth / Length
103.5 mm
Product Net Weight
4.75 kg
Product Main Type
SACE FORMULA DSA
Product Name
Moulded Case Circuit Breaker
Product Type
Automatic Circuit Breaker
Version
F
Electrical Durability
2000 cycle
Mechanical Durability
5000 cycle
Number of Poles
3P
Rated Current (In)
Main Circuit 320 A
Rated Impulse Withstand Voltage (Uimp)
6 kV
Rated Insulation Voltage (Ui)
690 V
Rated Operational Voltage
550 V AC 250 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(240 V AC) 42.5 kA (380 V AC) 18 kA (415 V AC) 18 kA (440 V AC) 18 kA (480 V AC) 12.5 kA (500 V AC) 10 kA (250 V DC) 2 Poles in Series 18 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
(240 V AC) 85 kA (380 V AC) 36 kA (415 V AC) 36 kA (440 V AC) 36 kA (480 V AC) 25 kA (500 V AC) 20 kA (250 V DC) 2 Poles in Series 36 kA
Rated Uninterrupted Current (Iu)
400 A
Release
MF
Release Type
M
Short-Circuit Performance Level
N
Standards
IEC
Sub-type
A3
Terminal Connection Type
Front
ETIM 8
EC000228 - Power circuit-breaker for trafo/generator/installation protection
ETIM 9
EC000228 - Power circuit-breaker for trafo/generator/installation protection
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
eClass
V11.1 : 27370409
Manufacturer ID
1SDA076729R1

Specifications may be subject to change without notice