BQD390 3 Pole 90 amp Bolt-on

The BQD390 is a Siemens molded case circuit breaker, specifically designed for panelboard mounting. It's a 3-pole breaker with a 90 Amp rating and a 480 VAC voltage rating. The BQD390 features a bolt-on connection type and has a thermal magnetic trip units with both long-time and instantaneous trip functions. 

Here's a more detailed breakdown: 

• Type: Siemens BQD
• Pole Configuration: 3-pole
• Amperage: 90 Amps
• Voltage: 480 VAC (also 277 VAC in some configurations)
• Interrupt Rating: 14kAIC at 480VAC
• Connection Type: Bolt-on
• Trip Type: Thermal-magnetic, with long-time and instantaneous trip functions
• Frame Size: 1 5 to100amp
• Wire Sizes: 14-6 AWG copper, 12-6 AWG aluminum
• Mounting: Panelboard mount
• Other Features: HACR ratings, switching duty ratings.