The ABB S201-B50NA is a 50 Amp single pole Type B 6kA 230V System Pro M Compact Miniature Circuit Breaker designed for reliable overload and short circuit protection.
Product ModelS201-B50NA
Material Number2CDS251103R0505
Product ID78000
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable ProtectionThe ABB S201-B50NA offers robust protection against overloads and short circuits, ensuring the safety of your electrical system.
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2. Compact DesignWith dimensions of 88mm x 18mm x 69mm, this MCB is compact and easy to install in any electrical panel.
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3. Current LimitingEquipped with two tripping mechanisms, this MCB provides both delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection.
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4. IEC 60947-2 ApprovedMeets international standards for safety and performance, ensuring compliance with global electrical regulations.
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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
B
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 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. Efficient OperationDesigned to trip between 3 to 5 times the full load current, this MCB ensures efficient operation and reliable circuit management.
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)
50 A
Rated Short-Circuit Capacity
(AC) 6 kA (DC) 6 kA (230 V AC) 6 kA (230 V) 6 kA (400 V) 6 kA
