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1SCA134581R1001 ABB OTDC16UST2 2 Pole 1000VDC 32A Switch Disconnector
ABB OTDC16UST2 2-pole PV disconnect switch rated at 16 A for 600 V DC UL and 660 V DC IEC applications, designed for photovoltaic systems and industrial DC isolation.
Why Choose the ABB OTDC16UST2 PV Disconnect Switch?
The ABB OTDC16UST2 (1SCA134581R1001) is a compact and reliable DC PV disconnect switch designed to provide safe isolation for photovoltaic (PV), battery energy storage and industrial direct current applications. As part of the trusted ABB OTDC switch disconnector series, it delivers dependable switching performance while complying with recognised IEC and UL standards for renewable energy installations.
Designed for OEMs, panel builders and electrical contractors, the OTDC16UST2 features a 2-pole single-circuit US configuration with a pre-mounted jumper for simplified installation. Its compact footprint, touch-safe terminals and flexible mounting options make it ideal for photovoltaic combiner boxes, battery storage systems and industrial DC control panels.
With a 16 A operational rating at 600 V DC (UL) and 16 A at 660 V DC (IEC), the ABB OTDC16UST2 provides dependable DC isolation for solar installations and other direct current applications. The switch is supplied with a terminal bolt kit, while compatible operating handles and shafts are ordered separately.
Key Advantages
- Compact DC PV disconnect switch for safe circuit isolation.
- Designed specifically for photovoltaic installations.
- 2-pole single-circuit US configuration.
- Pre-mounted jumper for simplified installation.
- Touch-safe IP20 protected terminal clamps.
- Suitable for base or DIN rail mounting with separate handle and shaft.
Key Features
- ABB OTDC switch disconnector series.
- Model: OTDC16UST2.
- Manufacturer part number: 1SCA134581R1001.
- 16 A at 600 V DC (UL).
- 16 A at 660 V DC (IEC).
- 2-pole single-circuit US configuration.
- Pre-mounted jumper included.
- Touch-safe IP20 protected terminals.
- Terminal bolt kit supplied.
- Handles and shafts available separately.
Reliable DC Isolation for Solar Energy Systems
DC disconnect switches provide a safe means of isolating photovoltaic strings and other direct current circuits during installation, maintenance and servicing. The ABB OTDC range has been specifically developed for renewable energy applications, delivering dependable switching performance and long service life in demanding operating environments.
The OTDC16UST2 combines ABB's proven engineering with compact construction, enabling straightforward integration into photovoltaic arrays, battery storage systems and industrial DC installations while maintaining high levels of safety and reliability.
Typical Applications
- Solar photovoltaic systems.
- PV combiner boxes.
- Battery energy storage systems.
- Industrial DC distribution panels.
- Renewable energy installations.
- OEM electrical control equipment.
Technical Specifications
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| Voltage | 1000 V | |
|---|---|---|
| Mounting Type | DIN rail | |
| Device Type | Switch Disconnector | |
| Supply Type | DC | |
| Product Series | ABB OTDC | |
| Current | 32 A | |
| IP Rating | IP20 | |
| Poles | 2-pole | |
| Manufacturer | ABB | |
| Series | OTDC Switch Disconnectors | |
| Model | OTDC16UST2 | |
| MPN | 1SCA134581R1001 | |
| Product type | DC PV disconnect switch | |
| Rated operational current (UL) | 16 A at 600 V DC | |
| Rated operational current (IEC) | 16 A at 660 V DC | |
| Number of poles | 2 | |
| Configuration | Single circuit (US type) | |
| Protection rating | IP20 terminal protection | |
| Mounting type | Base or DIN rail mounting | |
| Dimensions (H × W × D) | approx. 74 × 54.5 × 64 mm | |
| Weight | approx. 0.15 kg | |
| Supplied with | Terminal bolt kit and pre-mounted jumper | |
| HS Code | 85365080 | |
| Country of Manufacture | Estonia |
Frequently Asked Questions
What is the ABB OTDC16UST2 used for?
The OTDC16UST2 is a DC PV disconnect switch designed to safely isolate photovoltaic strings and other direct current circuits during maintenance and servicing.
What are the voltage and current ratings?
The switch is rated at 16 A at 600 V DC (UL) and 16 A at 660 V DC (IEC).
Does the switch include a pre-mounted jumper?
Yes. The OTDC16UST2 includes a factory-fitted jumper to simplify installation and wiring.
Does the switch include an operating handle?
No. The switch includes a terminal bolt kit, while compatible operating handles and shafts are supplied separately.
Where is the OTDC16UST2 typically installed?
It is commonly installed in photovoltaic combiner boxes, battery storage systems and industrial DC control panels requiring safe circuit isolation.
Trusted by Renewable Energy Professionals Worldwide
ABB OTDC disconnect switches are trusted by solar installers, electrical contractors and panel builders for delivering dependable DC isolation across photovoltaic and industrial renewable energy systems.
