S203M-Z63NA

Name: S203M-Z63NA
Brand: ABB
SKU: S203M-Z63NA

The ABB S203M-Z63NA is a 63A, 4P miniature circuit breaker with a Z tripping characteristic. It features current limiting and dual tripping mechanisms, making it suitable for traction and railway applications.

Product ModelS203M-Z63NA

Material Number2CDS273103R0608

Product ID80819

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable PerformanceThe ABB S203M-Z63NA is designed to provide reliable performance in harsh environments, ensuring continuous operation in temperatures ranging from -25°C to +55°C.
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2. Dual Tripping MechanismsEquipped with both delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection, this MCB offers comprehensive safety features.
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3. Current LimitingThe S203M-Z63NA features current limiting capabilities, which help in reducing the impact of short circuits and preventing damage to the electrical system.
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4. Compliance with International StandardsThis miniature circuit breaker complies with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring it meets the highest standards for safety and performance in residential, commercial, and industrial applications.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

CSA 22.2 No. 235 IEC/EN 60947-2 UL 1077

Tripping Characteristic

Rated Operational Voltage

acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 400 V acc. to IEC 60947-2 440 V AC

Operational Voltage

Maximum (Incl. Tolerance) 440 V AC 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)

5. Space-Saving DesignWith a compact design, the S203M-Z63NA can be easily mounted on DIN rail, making it an ideal choice for space-constrained installations, such as those found in traction and railway systems.

6. Versatile ConnectivityThe MCB supports various connection types, including busbars, flexible cables, and rigid conductors, ensuring flexibility in wiring configurations.

7. Enhanced Safety FeaturesThe Z tripping characteristic provides a fast response to short circuits, ensuring quick disconnection and minimizing the risk of electrical shock or fire.

8. Easy InstallationThe MCB is designed for easy installation, with screw terminals and a simple mounting process that requires minimal technical expertise, making it suitable for both professional and DIY applications.

9. High Insulation RatingWith a rated insulation voltage of 440V and a dielectric test voltage of 2kV, the S203M-Z63NA offers high insulation ratings, ensuring reliable operation and minimizing the risk of electrical faults.

10. Long-Term ReliabilityThe MCB is built to last, with an electrical endurance of up to 20,000 cycles, making it a durable solution for long-term use in demanding environments.

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

Rated Current (In)

63 A

Rated Short-Circuit Capacity

(AC) 10 kA (DC) 10 kA (230 V AC) 10 kA (400 V AC) 10 kA (400 V) 10 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(230 V AC) 25 kA (400 V AC) 15 kA (440 V AC) 15 kA (230 V) 25 kA (400 V) 15 kA

Rated Conditional Short-Circuit Current (Inc)

(230 V) 25 kA (400 V) 15 kA

Rated Service Short-Circuit Breaking Capacity (Ics)

(133 V AC) 15 kA (230 V AC) 7.5 kA

Rated Frequency (f)

50 / 60 Hz

Power Loss

20.8 W at Rated Operating Conditions per Pole 5.2 W

Power Supply Connection

Arbitrary

Contact Position Indication

Red ON / Green OFF

Energy Limiting Class

Mechanical Endurance

20000 cycle

Number of Protected Poles

Number of Poles

3+N

Overvoltage Category

III

Position of Neutral Terminals

Right

Tightening Torque

2.8 NÂ·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 II, 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 mmÂ² Flexible with Ferrule 0.75 ... 25 mmÂ² Flexible 0.75 ... 25 mmÂ² Flexible 0.75 ... 25 mmÂ² Rigid 0.75 ... 35 mmÂ² Rigid 0.75 ... 35 mmÂ² Stranded 0.75 ... 35 mmÂ²

Installation Size

acc. to DIN 43880 1

Terminal Type

Screw Terminals

Ambient Air Temperature

Operation -25 ... +55 Â°C Storage -40 ... +70 Â°C

Reference Ambient Air Temperature

30 Â°C

Degree of Protection

IP20 IP40 Enclosure with Cover IP40

Pollution Degree

Environmental Conditions

28 cycles with 55 Â°C / 90-96 % and 25 Â°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

Maximum Operating Voltage UL/CSA

125 V DC 480Y / 277 V AC

Interrupting Rating acc. to UL1077

(125 V DC) 10 kA (277 V AC) 6 kA (480Y / 277 V AC) 6 kA

Connecting Capacity UL/CSA

Busbar 14-8 AWG Conductor 14-4 AWG

Tightening Torque UL/CSA

18 inÂ·lb

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

0.125 kg

Built-In Depth (t2)

69 mm

Dimension Diagram

2CDC022007F0010

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

Manufacturer ID

2CDS273103R0608