Hager SBN390 SBN Load Break Switch 3P 100 A DIN Rail

The Hager SBN390 is a 3-pole 100 A load break switch (disconnector) for DIN rail mounting, rated at 400 V AC. It provides circuit isolation and load switching in low-voltage distribution boards, with a rated insulation voltage of 440 V and an impulse withstand voltage of 6000 V.

Technical specifications:

• Catalog reference: SBN390
• Manufacturer: Hager
• Product type: 3-pole load break switch (disconnector)
• Poles: 3 (3P)
• Rated current: 100 A
• Rated operating voltage (Ue): 400 V AC
• Insulation voltage (Ui): 440 V
• Impulse voltage withstand (Uimp): 6000 V
• Conditional short-circuit current (Icc, gl-gG fuse): 1.20 kA
• Making capacity (Icm) at 415 V AC (IEC 60947-3): 1.69 kA
• Rated short-time current (Icw, 1 s): 1.20 kA
• Current capacity at AC21 and AC22 (Cat. A and B): 100 A
• Frequency: 50-60 Hz
• IP rating: IP20
• Number of modules: 3
• Dimensions (H x W x D): 83 x 52.50 x 68 mm
• Normally open contacts: 3; normally closed contacts: 0
• Lower terminal type: biconnect for modular devices
• Nominal tightening torque: 3.60 Nm
• Connection cross-section, flexible conductor: 6-35 mm²
• Connection cross-section, rigid conductor: 6-50 mm²
• Operating temperature: -20 to 70°C
• Storage and transport temperature: -40 to 80°C
• Total power dissipation at rated current: 16.50 W (5.50 W per pole)
• Mechanical life: 40,000 operations
• Electrical life at rated load (AC21 and AC22): 2,500 operations
• RoHS compliant; REACh SVHC free

Features and benefits:

• Accepts flexible conductors from 6-35 mm² and rigid conductors from 6-50 mm², covering a wide range of wiring configurations.
• Biconnect lower terminals with aligned upper and lower terminal orientation support consistent modular DIN rail layouts.
• Wide operating temperature range of -20 to 70°C suits varied installation environments including those with elevated ambient temperatures.
• Compact 3-module DIN rail footprint at 52.50 mm width keeps panel space use to a minimum.

Applications:

• Main or sub-circuit isolation in residential and commercial distribution boards.
• Switching three-phase loads at 400 V AC in industrial control panels.
• Manual disconnection point in low-voltage systems requiring isolation of three-phase circuits.
• DIN rail assemblies alongside protective devices such as MCBs and RCDs in modular panel builds.

Also known as: Hager SBN390, 3-pole load break switch 100A, three-phase disconnector switch.