ABB MS132-2.5 Motor Protection Switch, 3-Pole, 1.6-2.5 A, Thermal-Magnetic, 690 V AC, 100 kA

Where conventional motor protection switches compromise between compactness and breaking capacity, the ABB MS132-2.5 delivers both: a 100 kA short-circuit rating in an IP20 housing that mounts on a DIN rail or with screws. This three-pole device protects motors up to 2.5 A with a thermal-magnetic trip unit and phase failure sensitivity, ensuring precise overload and short-circuit protection without nuisance tripping.

Highlights

• Adjustable thermal overload protection from 1.6 A to 2.5 A
• Magnetic short-circuit protection with high breaking capacity of 100 kA at 400 V AC
• Phase failure sensitivity guards against single-phasing damage
• Compact IP20 housing for DIN rail or screw mounting
• Screw terminals accept conductors up to 4 mm²
• Wide operating temperature range: -25 °C to +70 °C
• Clear trip indication and manual reset for quick fault identification

In daily use

In everyday operation, the MS132-2.5 reliably protects small motors in pumps, fans, conveyors, and machine tools. The rotary knob allows precise current setting within the 1.6–2.5 A range, ensuring the motor is protected against overloads without nuisance tripping. Screw terminals simplify wiring, while the clear trip indication and manual reset minimize downtime by enabling rapid fault identification and restoration.

Full specifications

• Rated operational current (Ie): 2.5 A
• Setting range (Ir): 1.6 – 2.5 A
• Number of poles: 3
• Rated operational voltage (Ue): 690 V AC
• Rated short-circuit breaking capacity (Ics): 100 kA at 400 V AC
• Tripping characteristic: Thermal-magnetic
• Overload protection: Yes (thermal)
• Short-circuit protection: Yes (magnetic)
• Phase failure sensitivity: Yes
• Degree of protection: IP20
• Mounting type: DIN rail / screw mounting
• Connection type: Screw terminals
• Operating temperature range: -25 °C to +70 °C
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated frequency: 50/60 Hz
• Power loss: 3.5 W at Ie
• Electrical durability: 100,000 cycles

Final note

Engineered for industrial control panels, the MS132-2.5 combines robust protection with ease of installation, making it a dependable choice for motor protection in demanding environments.