Product Model

S203MT-Z8NA

In Stock
Last updated: 2025/4/19
ABB S203MT-Z8NA

Selling Points

  • 1Advanced Protection Mechanisms: Equipped with delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection.
  • 2Versatile Configurations: Available in different characteristics (B, C, D, K, Z) and configurations (4P, 4P+N) to suit various needs.
  • 3High Breaking Capacity: Up to 10 kA at 230/400 V AC, ensuring reliable operation under heavy loads.
  • 4Compliance with International Standards: Meets IEC/EN 60898-1 and IEC/EN 60947-2 standards for global compatibility.
  • 5Compact Design: Bottom-fitting auxiliary contact saves 50% space, making it ideal for space-constrained installations.
Product Details
S203MT-Z8NA
ABB

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

ParameterValueParameterValue
Standards
IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235
Tripping Characteristic
Z
Rated Voltage (Ur)
440 V
Rated Operational Voltage
acc. to IEC 60898-1 440 V acc. to IEC 60947-2 230 V
Operational Voltage
Maximum (Incl. Tolerance) 253 V AC Maximum (Incl. Tolerance) 66 V DC Minimum 12 V AC Minimum 12 V DC
Rated Insulation Voltage (Ui)
acc. to IEC/EN 60664-1 440 V
Rated Impulse Withstand Voltage (Uimp)
4 kV at 2000 m 5 kV at Sea Level 6.2 kV
Dielectric Test Voltage
50/60 Hz-1 min: 2 kV
Input Voltage Type
AC
Rated Current (In)
8 A
Rated Short-Circuit Capacity
10 kA (230 V) 10 kA (400 V) 10 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
15 kA (230 V) 15 kA (400 V) 15 kA
Rated Service Short-Circuit Breaking Capacity (Ics)
11.2 kA
Rated Frequency (f)
50 / 60 Hz
Power Loss
8 W
Energy Limiting Class
3
Mechanical Endurance
20000 cycle
Number of Protected Poles
3
Number of Poles
3+N
Number of Modular Spacings per DIN Rail
4
Overvoltage Category
III
Tightening Torque
2.8 N·m
Screw Terminal Type
Failsafe Bi-directional Cylinder-lift Terminal
Actuator Marking
I / O
Actuator Material
Insulation Group II, Black, Sealable
Housing Material
Insulation Group I, RAL 7035
Mounting on DIN Rail
TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715
Mounting Position
any
Recommended Screw Driver
Pozidriv 2
Accessories Available
Yes
Connecting Capacity
Busbar 10 / 10 mm² Flexible with Ferrule 0.75 ... 16 mm² Flexible 0.75 ... 25 mm² Flexible 0.75 ... 25 mm² Rigid 0.75 ... 35 mm² Stranded 0.75 ... 35 mm²
Installation Size
acc. to DIN 43880 3
Terminal Type
Screw Terminals
Ambient Air Temperature
Operation -40 ... +70 °C Storage -40 ... 75 °C
Degree of Protection
Enclosure with Cover IP20
Pollution Degree
3
Environmental Conditions
28 cycles with 55 °C / 90-96 % and 25 °C / 95-100 %
Resistance to Vibrations
20 Cycles with Load 0.8 In: 5g 5 ... 150 ... 5 Hz
Resistance to Shock acc. to IEC 60068-2-27
25g 2 shocks 13 ms
Width in Number of Modular Spacings
4.0
Product Net Width
70 mm
Product Net Height
88 mm
Product Net Depth / Length
69 mm
Product Net Weight
0.5 kg
Pole Net Weight
0.115 kg
Built-In Depth (t2)
69 mm
ETIM 8
EC000042 - Miniature circuit breaker (MCB)
ETIM 9
EC000042 - Miniature circuit breaker (MCB)
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
WEEE B2C / B2B
Business To Business
CN8
8536 20 10
UNSPSC
39121603
eClass
V11.0 : 27141901
IDEA Granular Category Code (IGCC)
4897 >> Miniature circuit breakers
Object Classification Code
F
Manufacturer ID
2CDS273446R0408

Specifications may be subject to change without notice