ABB OTDC16U6 6-pole triple-circuit DC switch disconnector rated at 16 A for 660 V DC and 10 A for 1000 V DC, designed for photovoltaic, battery storage and industrial DC isolation applications.
The ABB OTDC16U6 (1SCA134371R1001) is a compact and highly reliable DC switch disconnector designed for safe isolation in photovoltaic (PV), battery energy storage and industrial direct current applications. Part of the proven ABB OTDC switch disconnector series, it provides dependable switching performance while meeting both IEC and UL standards for demanding renewable energy installations.
Engineered for panel builders, OEMs and electrical contractors, the OTDC16U6 features a triple-circuit, 6-pole configuration that enables the safe isolation of multiple DC strings. Its compact design, touch-safe terminals and flexible mounting options make it an excellent solution for modern DC distribution systems.
With a 16 A operational rating at 660 V DC, 10 A at 1000 V DC and 16 A at 600 V DC (UL), the ABB OTDC16U6 is ideally suited to solar PV systems, battery storage installations and industrial DC power applications. The switch includes a terminal bolt kit, while compatible operating handles and shafts are available separately to suit the installation requirements.
DC switch disconnectors provide a safe means of isolating direct current circuits during maintenance and servicing. The ABB OTDC series has been specifically developed for photovoltaic systems, battery energy storage systems and industrial DC applications where dependable switching performance and long service life are essential.
The OTDC16U6 combines ABB's proven engineering with compact construction, delivering reliable electrical performance, straightforward installation and compliance with international standards for renewable energy applications.
| Current | 32 A |
|---|---|
| Voltage | 000 V |
| IP Rating | IP20 |
| Manufacturer | ABB |
| Series | OTDC Switch Disconnectors |
| Model | OTDC16U6 |
| MPN | 1SCA134371R1001 |
| Product type | DC switch disconnector |
| Rated operational current | 10 A at 1000 V DC |
| UL rating | 16 A at 600 V DC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Number of poles | 6 |
| Number of circuits | 3 |
| Protection rating | IP20 |
| Mounting type | Base or DIN rail mounting |
| Terminal capacity | 2.5 to 16 mm² |
| Dimensions (H × W × D) | approx. 54.8 × 54.5 × 109.5 mm |
| Weight | approx. 0.15 kg |
| HS Code | 85365080 |
| Country of Manufacture | Estonia |
The OTDC16U6 is a DC switch disconnector designed to safely isolate direct current circuits in photovoltaic, battery storage and industrial DC applications.
The switch is rated at 16 A at 600 V DC (UL), 16 A at 660 V DC and 10 A at 1000 V DC.
The OTDC16U6 features a 6-pole, triple-circuit configuration for isolating multiple DC strings.
No. The terminal bolt kit is included, while the operating handle and shaft are ordered separately to match the installation.
It is commonly installed in photovoltaic systems, battery energy storage systems, combiner boxes and industrial DC control panels requiring safe circuit isolation.
ABB OTDC switch disconnectors are trusted by renewable energy engineers, electrical contractors and panel builders for delivering safe, reliable DC isolation across photovoltaic, battery storage and industrial power systems.
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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...