JXD63B400 ITE / Siemens

The JXD63B400 is a Siemens molded case circuit breaker, specifically designed for panelboard mounting. It's a 3-pole breaker with a 400 Amp rating and an aic rating of 35,000 @ 480 VAC. The JXD63B400 features a bolt-on connection type and has a thermal magnetic trip unit with both long-time and instantaneous trip functions. 

Here's a more detailed breakdown: 

• Type: Siemens JXD
• Pole Configuration: 3-pole
• Amperage: 400 Amps
• Voltage: 480 VAC (also 277 VAC in some configurations)
• Interrupt Rating: 35kAIC at 480VAC
• Connection Type: Bolt-on
• Trip Type: Thermal-magnetic, with long-time and instantaneous trip functions
• Frame Size: 250 to 400 Amp
• Mounting: Panelboard mount
• Other Features: HACR ratings, switching duty ratings.