S201-K20NA

Name: S201-K20NA
Brand: ABB
SKU: S201-K20NA

The ABB S201-K20NA is a 20A, 480Y/277 VAC miniature circuit breaker with thermal-magnetic trip protection. Suitable for supplemental protection in various applications, including DIN rail mounting.

Product ModelS201-K20NA

Material Number2CDS251103R0487

Product ID79997

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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Feature1. Compact Design and DIN Rail Mounting The ABB S201-K20NA is designed for compact installations, making it ideal for space-constrained environments. Its DIN rail mounting ensures easy integration into your electrical system.
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Feature2. Thermal-Magnetic Trip Protection Equipped with thermal-magnetic trip protection, this circuit breaker provides reliable overcurrent protection. The B, C, D, K, and Z trip characteristics ensure it meets various application needs.
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Feature3. Wide Voltage and Current Range Rated for 480Y/277 VAC, this circuit breaker supports a wide range of voltage requirements. It also covers currents from 0.5 to 63 amps, making it versatile for various electrical applications.
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Feature4. Finger Safe Terminals and Ring Tongue Styles The ABB S201-K20NA features finger-safe terminals and ring tongue styles, enhancing safety during installation and maintenance. This design ensures that operators can handle the circuit breaker without risk of electrical shock.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

IEC/EN 60898-1 IEC/EN 60947-2 UL 1077

Tripping Characteristic

Rated Operational Voltage

acc. to IEC 60898-1 230 V AC acc. to IEC 60898-1 230 V acc. to IEC 60947-2 230 V AC

Operational Voltage

Maximum (Incl. Tolerance) 253 V AC

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

Feature5. Optional Accessories and Customization This circuit breaker offers a range of optional accessories, including a front mounting kit, shunt trip, undervoltage release, and auxiliary switch. These customization options allow you to tailor the product to your specific needs.

Feature6. UL and CSA Approvals The ABB S201-K20NA is UL and CSA approved, ensuring compliance with industry standards for safety and performance. It also carries IEC and CE certifications, making it suitable for international applications.

Dielectric Test Voltage

50/60 Hz-1 min: 2 kV

Input Voltage Type

Rated Current (In)

20 A

Rated Short-Circuit Capacity

(AC) 6 kA (DC) 6 kA (230 V AC) 6 kA (230 V) 6 kA (400 V) 6 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(133 V AC) 20 kA (230 V AC) 10 kA (24 V DC) 20 kA (60 V DC) 10 kA (230 V) 10 kA (400 V) 10 kA

Rated Conditional Short-Circuit Current (Inc)

(230 V) 10 kA

Rated Service Short-Circuit Breaking Capacity (Ics)

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

Frequency (f)

50 Hz

Rated Frequency (f)

50 / 60 Hz

Power Loss

5.4 W at Rated Operating Conditions per Pole 2.7 W

Power Supply Connection

Arbitrary

Contact Position Indication

Red ON / Green OFF

Energy Limiting Class

Electrical Endurance

20000 AC cycle

Mechanical Endurance

20000 cycle

Number of Protected Poles

Number of Poles

1+N

Overvoltage Category

III

Position of Neutral Terminals

Right

Tightening Torque

2.8 NÂ·m

Mounting Type

DIN-Rail

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 Rigid 0.75 ... 35 mmÂ² Rigid 0.75 ... 35 mmÂ² Stranded 0.75 ... 35 mmÂ²

Installation Size

acc. to DIN 43880 1

Wire Stripping Length

12.5 mm

Terminal Type

Screw Terminals

Ambient Air Temperature

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

110 V DC 480Y / 277 V AC

Interrupting Rating acc. to UL1077

(277 V AC) 6 kA (60 V DC) 10 kA (120 V) 10 kA

Connecting Capacity UL/CSA

Busbar 18-8 AWG Conductor 18-4 AWG

Tightening Torque UL/CSA

18 inÂ·lb

Width in Number of Modular Spacings

2.0

Product Net Width

35 mm

Product Net Height

88 mm

Product Net Depth / Length

69 mm

Product Net Weight

0.25 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

2CDS251103R0487