ABB OTDC100U33 triple circuit DC switch disconnector rated at 1000 V DC with 100 A UL operational current and 160 A IEC rated permanent current for photovoltaic, battery energy storage and industrial DC isolation.
The ABB OTDC100U33 (SKU 1SCA149069R1001) is a premium DC switch disconnector designed for the safe isolation of direct current circuits in photovoltaic (PV), battery energy storage and industrial DC power systems. As part of the proven ABB OTDC switch disconnector range, it provides dependable switching performance, compact installation and full compliance with both IEC and UL standards for demanding renewable energy applications.
Designed specifically for high voltage DC systems, the OTDC100U33 features a triple circuit, 6-pole configuration, enabling efficient isolation of multiple PV strings within a single compact device. The switch is supplied with mandatory phase barriers and terminal hardware, while the operating handle and shaft are ordered separately to provide maximum installation flexibility for panel builders and OEM manufacturers.
With a 100 A UL operational current, 160 A IEC rated permanent current, 1000 V DC rating and a compact base-mounted design, the OTDC100U33 offers an ideal solution for modern renewable energy installations requiring safe and reliable DC isolation.
The ABB OTDC100U33 has been engineered to provide safe isolation of multiple direct current circuits while maintaining excellent electrical performance and long-term operational reliability. Its triple circuit design allows efficient switching in photovoltaic combiner boxes, battery energy storage systems and industrial DC installations where space optimisation is essential.
As part of ABB's globally recognised OTDC product family, the OTDC100U33 offers dependable switching performance, straightforward installation and reliable operation in demanding renewable energy and industrial environments.
| Current | 160 A |
|---|---|
| Voltage | 000 V |
| IP Rating | IP20 |
| Manufacturer | ABB |
| Series | OTDC DC Switch Disconnectors |
| Model | OTDC100U33 |
| SKU | 1SCA149069R1001 |
| Product type | DC switch disconnector |
| UL operational current | 100 A |
| IEC rated permanent current | 160 A |
| Rated operational voltage | 1000 V DC |
| Rated insulation voltage (Ui) | 1500 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Number of poles | 6 |
| Configuration | Triple circuit (U33) |
| Mounting type | Base mounting |
| Connection type | Bolt connection |
| Protection rating | IP20 |
| Dimensions (H × W × D) | approx. 255 × 190 × 98 mm |
| Weight | approx. 3.2 kg |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The OTDC100U33 is designed to safely isolate multiple direct current circuits in photovoltaic systems, battery energy storage installations and industrial DC applications.
The switch is rated at 100 A under UL standards and has a 160 A IEC rated permanent current.
The OTDC100U33 features a 6-pole triple circuit configuration for multi-string DC installations.
No. The switch includes the required phase barriers and terminal hardware, while the operating handle and shaft are supplied separately.
It is typically installed in photovoltaic combiner boxes, battery energy storage systems, industrial DC distribution panels and renewable energy installations.
ABB OTDC switch disconnectors are trusted worldwide by electrical engineers, renewable energy specialists and panel builders for delivering safe, efficient and dependable DC isolation across demanding industrial and photovoltaic installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...