ABB OTDC16FT4 4-pole double-circuit door-mounted DC switch disconnector rated at 16 A at 660 V DC and 10 A at 1000 V DC for photovoltaic systems, battery storage and industrial DC isolation.
The ABB OTDC16FT4 (Part Number 1SCA123841R1001) is a compact DC switch disconnector designed to provide safe and reliable isolation for direct current circuits in photovoltaic installations, battery energy storage systems and industrial DC applications. As part of the trusted ABB OTDC switch disconnector range, it delivers dependable switching performance while helping protect personnel and equipment during maintenance and servicing.
Designed specifically for door-mounted installations, the OTDC16FT4 features a 4-pole double-circuit configuration with IP20 protected terminal clamps. Jumpers are supplied with the switch, while the operating handle and shaft are ordered separately, allowing installers to configure the operating mechanism to suit the enclosure.
With a 16 A rated operational current at 660 V DC, 10 A at 1000 V DC and a compact design, the OTDC16FT4 is ideal for solar combiner boxes, photovoltaic arrays, battery storage systems and industrial DC distribution equipment.
The ABB OTDC16FT4 is engineered to provide safe manual isolation of direct current circuits used in photovoltaic arrays, battery storage systems and industrial DC installations. Its compact construction makes it well suited to modern electrical enclosures where space is limited without compromising switching performance.
With ABB's proven DC switching technology and robust mechanical construction, the OTDC16FT4 helps improve maintenance safety while providing dependable long-term operation in demanding renewable energy applications.
| Current | 25 A |
|---|---|
| Voltage | 000 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Manufacturer | ABB |
| Series | OTDC Switch Disconnectors |
| Model | OTDC16FT4 |
| Manufacturer Part Number | 1SCA123841R1001 |
| Product type | DC switch disconnector |
| Rated operational current | 10 A at 1000 V DC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Conventional thermal current (Ith) | 25 A |
| Number of poles | 4 |
| Circuit configuration | Double circuit |
| Mounting type | Door mounting |
| Terminal type | Screw terminals (2.5 to 16 mm²) |
| Protection rating | IP20 |
| Dimensions (H × W × D) | Approx. 69 × 52.5 × 87 mm |
| Weight | Approx. 0.22 kg |
| HS Code | 85365080 |
| Country of Manufacture | Estonia |
The OTDC16FT4 safely isolates direct current circuits in photovoltaic systems, battery storage installations and industrial DC applications.
The switch is rated at 16 A at 660 V DC and 10 A at 1000 V DC.
The switch features a 4-pole double-circuit configuration for reliable DC isolation.
Yes. The switch is specifically designed for door-mounted installations within electrical enclosures.
No. Jumpers are included, while the operating handle and shaft must be ordered separately.
ABB OTDC switch disconnectors are trusted by panel builders, solar installers and industrial engineers for providing reliable DC isolation, compact installation and dependable long-term performance.
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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...