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1SCA134582R1001 ABB OTDC16UST4 4 Pole 1000VDC 32A Switch Disconnector
ABB OTDC16UST4 4-pole double-circuit 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 OTDC16UST4 PV Disconnect Switch?
The ABB OTDC16UST4 (1SCA134582R1001) is a compact and reliable DC PV disconnect switch engineered 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 OTDC16UST4 features a 4-pole double-circuit US configuration, making it ideal for isolating multiple photovoltaic strings. Its compact design, touch-safe terminals and flexible door mounting arrangement provide straightforward installation and dependable long-term operation in demanding environments.
With a 16 A operational rating at 600 V DC (UL), 16 A at 660 V DC (IEC) and a double-circuit US configuration, the ABB OTDC16UST4 is ideally suited to photovoltaic systems, battery storage installations and industrial DC 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.
- Double-circuit 4-pole US configuration for photovoltaic installations.
- Designed specifically for renewable energy systems.
- Door-mounted design for control panels and enclosures.
- Touch-safe IP20 protected terminals.
- Reliable ABB switching technology for demanding industrial environments.
Key Features
- ABB OTDC switch disconnector series.
- Model: OTDC16UST4.
- Manufacturer part number: 1SCA134582R1001.
- 16 A at 600 V DC (UL).
- 16 A at 660 V DC (IEC).
- 4-pole double-circuit US configuration.
- Door-mounted installation.
- Terminal bolt kit included.
- Handles and shafts available separately.
- Suitable for photovoltaic and industrial DC isolation.
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 OTDC16UST4 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 | Door / front mounting | |
| Product Series | ABB OTDC | |
| Device Type | Switch Disconnector | |
| Supply Type | DC | |
| Current | 32 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Manufacturer | ABB | |
| Series | OTDC Switch Disconnectors | |
| Model | OTDC16UST4 | |
| MPN | 1SCA134582R1001 | |
| 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 | 4 | |
| Configuration | Double circuit (US type) | |
| Protection rating | IP20 | |
| Mounting type | Door mounting | |
| Dimensions (H × W × D) | approx. 74 × 54.5 × 87 mm | |
| Weight | approx. 0.15 kg | |
| Supplied with | Terminal bolt kit | |
| HS Code | 85365080 | |
| Country of Manufacture | Estonia |
Frequently Asked Questions
What is the ABB OTDC16UST4 used for?
The OTDC16UST4 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).
What configuration does the switch use?
The OTDC16UST4 features a 4-pole double-circuit US configuration for photovoltaic applications.
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 OTDC16UST4 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.
