The ABB MS132-4.0KT is a compact circuit breaker for transformer protection, offering reliable primary side protection and easy installation.
Product ModelMS132-4.0KT
Material Number1SAM340010R1008
Product ID86378
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Compact DesignDescription: The MS132-4.0KT is designed to be compact, measuring 45 mm in width, making it ideal for space-constrained applications.
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2. Reliable ProtectionDescription: This circuit breaker provides robust protection against short-circuits, overload, and phase failures, ensuring the reliability of your control transformers.
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3. Easy InstallationDescription: With its straightforward installation process and versatile terminal connections, the MS132-4.0KT simplifies the setup of your transformer protection system.
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4. High DurabilityDescription: Built to last, the MS132-4.0KT offers a high mechanical durability of 100,000 cycles and electrical durability of 50,000 cycles, ensuring long-term performance.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Product Net Width
45 mm
Product Net Height
112 mm
Product Net Depth / Length
87 mm
Product Net Weight
0.286 kg
Rated Service Short-Circuit Breaking Capacity (Ics)
5. Compliance with StandardsDescription: The MS132-4.0KT complies with IEC/EN 60947-2 and IEC/EN 60947-4-1 standards, ensuring it meets the highest industry standards for safety and performance.
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6. Compact DimensionsDescription: The device’s compact dimensions (45 mm width) make it suitable for a variety of applications where space is limited.
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7. Versatile Terminal ConnectionsDescription: The MS132-4.0KT supports various terminal connections including rigid solid, rigid stranded, flexible with ferrule, and flexible without ferrule, accommodating different wiring configurations.
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8. Trip Class 10Description: The device features a trip class 10, ensuring reliable operation and protection against short-circuits and overloads.
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9. Primary Side ProtectionDescription: Specifically designed for primary side protection, the MS132-4.0KT ensures that your control transformers are safeguarded from potential electrical hazards.
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10. IP20 EnclosureDescription: The device comes with an IP20 enclosure, providing a level of protection against solid objects and dust, enhancing its overall reliability and durability.
Rated Instantaneous Short-Circuit Current Setting (Ii)
80 A
Setting Range
2.5 ... 4.0 A
Rated Operational Voltage
Main Circuit 690 V AC
Rated Operational Current (Ie)
4 A
Rated Frequency (f)
Main Circuit 50 Hz Main Circuit 60 Hz
Operating Frequency (fsw)
0 ... 400 Hz
Rated Impulse Withstand Voltage (Uimp)
Main Circuit 6 kV
Rated Insulation Voltage (Ui)
690 V
Power Loss
at Rated Operating Conditions per Pole 0.6 ... 1.5 W
Any UL Listed Fuses or Circuit-Breakers, Tap Conductor Protection in Group Installations (480Y / 277 V AC) 65 kA Any UL Listed Fuses or Circuit-Breakers, Tap Conductor Protection in Group Installations (600Y / 347 V AC) 47 kA
Maximum Operating Voltage UL/CSA
Main Circuit 600 V AC
Horsepower Rating UL/CSA
(120 V AC) Single Phase 0.13 Hp (220 ... 240 V AC) Single Phase 0.33 Hp
Full Load Amps Motor Use
(120 V AC) Single Phase 4 A (220 ... 240 V AC) Single Phase 4 A
Locked Rotor Amps
(120 V AC) Single Phase 24 A (220 ... 240 V AC) Single Phase 24 A
