Utilizing advanced microprocessor technology, the Siemens SMD6A800LIG is a 3-pole, 800A MCCB. It belongs to the Sentron MD frame family for complex industrial power distribution. It is compatible with Siemens P4, P5, S4, S5, and SPP panelboards, plus SB switchboards. Lugs are not included and must be sourced separately. The Sensitrip IV unit provides adjustable LIG functions, Dynamic Arc Sentry (DAS), and a maintenance mode to enhance personnel safety during equipment servicing.
What panelboards and switchboards are compatible with the Siemens SMD6A800LIG?
This MD frame circuit breaker is designed for use in Siemens P4, P5, S4, S5, and SPP panelboards, as well as SB switchboards and motor control centers.
Does the SMD6A800LIG include ground fault protection?
Yes, this breaker features an electronic trip unit with LIG functions, providing adjustable long-time, instantaneous, and integral ground fault protection for the circuit.
What wire size do the standard mechanical lugs for this 800A MD frame breaker accept?
Standard 800A mechanical lug kits for Siemens MD frame breakers, such as the TA3K500, accept three 1/0 AWG to 500 kcmil copper or aluminum conductors per phase.
Can this breaker be used with compression lugs?
Yes, the Siemens MD frame accepts compression lug kits, such as the CCM800K3, which accommodates 500 kcmil wire for 800A applications.
What type of trip unit does the SMD6A800LIG use?
It utilizes a Siemens Sensitrip solid-state electronic trip unit, which allows for precise coordination and adjustable trip settings compared to standard thermal-magnetic breakers.
Is the continuous current rating adjustable on the SMD6A800LIG?
Yes, the Sensitrip electronic trip unit allows you to adjust the continuous current, or long-time setting, to match the specific ampacity requirements of your application up to its 800A maximum.
What safety indicators are provided on the SMD6A800LIG trip unit?
Because this catalog number includes 6A, it is equipped with a Sensitrip IV trip unit featuring LED status indicators on the front to display Active, Overload, and Maintenance Mode status.
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