ABB 1SCA158220R1001 OTDC500F11 2P 1000V DC 10kA Switch Disconnector

The ABB 1SCA158220R1001 OTDC500F11 is a two-pole DC switch-disconnector rated 500 A at 1000 V DC on the M frame, sized for utility-scale photovoltaic combiner boxes and inverters. It carries a 10 kA short-circuit making capacity (Icm), a 1500 V rated insulation voltage and a 12 kV impulse withstand voltage for base-mounted installation.

Technical Specifications

Certifications & Standards

• IEC 60947-1
• IEC 60947-3

Selection Notes

The DC-22B mixed resistive/inductive utilization rating is capped at 400 A even though the DC-21B, DC-PV1 and DC-PV2 ratings all reach 500 A, so a project driven by inductive switching duty should size against the lower 400 A figure rather than the headline 500 A. This switch shares the M-frame footprint with the 400 A and 630 A units in the range, keeping combiner box layouts consistent as current scales. At 1000 V DC it fits installations capped at that bus voltage; a 1500 V utility-scale string needs the corresponding higher-voltage variant.