Altech 40A 1 Pole Thermal Magnetic Circuit Breaker, 240V ac L. Mounting Style: DIN Rail Mount. Tripping Mechanism: Thermal-Magnetic. Break Time: Time Delay. Special Features: HACR Type, IP20 Terminal Protection, Line/Load Reversible, Positive Trip Indicator. Circuit Breaker Type: MCCB. Reset Actuator Type: Handle. Overall Dimensions: 109 x 17.5 x 66.5mm. Overall Depth: 66.5mm. Application: Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformer, UL489 Applications. Overall Length: 109mm. MPN: 1DU40L