Selective Main Circuit Breaker 3Poles 40A 400V IP40 ABB

Description

S751/3-E40, The selective main circuit breakers of the S750 series are certified according to DIN VDE 0641-21 as voltage-independent selective main line circuit breakers (SHU). They are designed for non-professional operation and meet the highest overvoltage category. Their application areas are diverse: as a disconnecting device at the meter panel in accordance with the grid operator's TAB (Technical Specifications for Main Circuit Breakers) or VDE-AR-N 4101, as well as in all low-voltage main distribution boards for the protection of distribution circuits, and as a disconnecting device with a disconnecting function. Their special selectivity properties ensure high system availability. The S750 series is designed for direct mounting on a 4- or 5-pole 40mm (12 mm x 5/10mm) busbar system. Regardless of the rated current of the S750, the busbar system can be fed directly via the lower terminal with up to 50mm² and a maximum of 100A. Devices in the S 750 family include an integrated locking feature that allows for simultaneous blocking of the three poles of a three-phase power supply. The integrated locking slide locks in the ON or OFF position and can be additionally secured with a padlock, wire seal, or cable tie.

Technical Information

• Mounting method: DIN rail
• Frequency: 50Hz
• Rated current: 40A
• Rated voltage: 400V
• Release characteristic: E
• Rated insulation voltage Ui: 690V
• Number of poles: 3
• Rated switching capacity: 25kA
• Over voltage category: 4
• Pollution degree: 3
• Rated surge voltage invariability: 6kV
• Degree of protection (IP): IP40
• Concurrently switching neutral conductor: No
• Construction size according to DIN 43880: 6

Specifications

• Measure (WxHxD): 81x151.3x116mm