ABB SACE T6H 800 4-Pole Circuit Breaker with PR222DS/P Release

ABB SACE T6H 800A 4-Pole Circuit Breaker (PR222DS/P Release)

The ABB SACE T6H 800 is a Moulded Case Circuit Breaker (MCCB) offering best electrical protection and sophisticated diagnostic control. The 4-pole design is for heavy industrial and marine use, and features a strong short-circuit breaking capability (70 kA at 415V) with a sturdy 800 Amps continuous current rating. Providing highly flexible, accurate protection from overloads, short-circuits and selective ground faults, the PR222DS/P electronic trip unit is a significant tool in protecting complex electrical distribution networks.

Model Details:

• Brand: ABB
• Product Series: SACE Tmax T (T6 Frame Size)
• Manufacturer Part Number (MPN): 1SDA060297R1
• Number of Poles: 4 Poles (Neutral 100% Fully Rated)
• Trip Unit Type: PR222DS/P Electronic Release
• Country of Origin: Italy

Technical Specifications

Features:

• Advanced PR222DS/P Electronic Release: Provides accurate microprocessor-based management of Long-time (L), Short-time (S), Instantaneous (I) and Ground-fault (G) protection parameters for superior system selectivity.
• True 4-Pole Neutral Protection Full four-pole interruption separates the neutral line to effectively suppress harmonic currents, ground loops and safety issues in ungrounded or high-impedance marine systems
• High Short-Circuit Performance (70 kA): “H” class interruption thresholds enabling safe isolation of huge fault currents without catastrophic failure or cascading upstream damage.
• Double Insulation Architecture: Total separation of power circuits from the front operating panel, providing operator protection during manual resets and monitoring processes.
• Ultra Compact T6 Footprint: 800This power distribution’s lower chassis depth saves significant real estate inside tight main switchboards and control consoles.

Our Engineer’s Guide:

1. Harmonic Thermal Profiling: In modern vessels running Variable Frequency Drives (VFDs) for propulsion or heavy thrusters, non-linear loads introduce high third-harmonic distortion into the neutral line. Because this is a 4-pole breaker, make sure the neutral pole trip setting on the PR222DS/P is monitored. Never adjust the neutral threshold down unless you have confirmed balance; otherwise, harmonic neutral heating will trigger nuisance trips.
2. Thermal Memory Management: The PR222DS/P features an internal “thermal memory” algorithm. If the breaker trips on an overload, let the system cool down before forcing a manual or remote reset. Forcing a fast reset repeatedly overrides the protective curve and can permanently bake the internal current transformers (CTs) and compromise downstream insulation.
3. Marine Environmental Maintenance: Salt-laden, humid marine air accelerates contact resistance at the terminal links. During dry-docking or semi-annual PMS (Planned Maintenance System) cycles, verify terminal torque specs (tighten to ABB’s precise Newton-meter ratings) and use an infrared thermal camera under full load to spot micro-ohm hot spots before they escalate into terminal meltdowns.