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1SCA131851R1001 ABB OTDCP25SA22MD 4 Pole 1000VDC 25A Switch Disconnector
MPN: 1SCA131851R1001
Alt. SKU: OTDCP25SA22MD
Why Choose the ABB OTDCP25SA22MD Enclosed DC Switch
The ABB OTDCP25SA22MD is an enclosed DC switch disconnector engineered for photovoltaic and other DC installations. Rated at 25 A with up to 1000 V DC operational voltage, it provides reliable on load switching and safe isolation. The rugged OTDCP enclosure is moulded from glass reinforced polycarbonate with UV protection and IP65 sealing for dependable outdoor or indoor service.
This dual string model isolates two PV strings, each with a 2 pole DC path, inside a single compact housing. The SA variant features a red and yellow safety handle that is padlockable for lock off procedures, plus an interlocked cover with a maintenance defeat option for authorised personnel.
Key Features
- Enclosed dual string DC switch disconnector for PV and DC circuits.
- 25 A DC rated operational current, up to 1000 V DC.
- IP65 UV resistant glass reinforced polycarbonate enclosure.
- Red and yellow padlockable safety handle with positive indication.
- Interlocked cover with defeatable interlock for maintenance.
- Threaded entries and knockouts for top or bottom cable entry.
Technical Specifications
- Manufacturer: ABB
- Series: OTDCP enclosed DC switch disconnectors
- Model: OTDCP25SA22MD
- Product ID: 1SCA131851R1001
- Configuration: 2 strings x 2 pole DC isolation
- Rated operational current Ie: 25 A DC at up to 1000 V DC
- Rated insulation voltage Ui: 1000 V
- Impulse withstand Uimp: 8 kV
- Degree of protection: IP65
- Enclosure material: Glass reinforced polycarbonate, UV protected
- Handle: Red and yellow safety selector, padlockable
- Standards: IEC or EN 60947 3
- Notes: Always verify utilisation category and maximum string voltage against ABB application data for your installation.
Certifications
Conforms to IEC or EN 60947 3 switch disconnector requirements. CE and UKCA documentation plus RoHS and REACH statements are available from ABB.
Comparison and Selection Notes
Choose OTDCP25SA22MD when two PV strings require compact IP65 DC isolation at 25 A with a red and yellow safety handle. For the black handle variant select OTDCP25S22MD. For 16 A duty consider OTDCP16S22MD or OTDCP16SA22MD.
Frequently Asked Questions
- What is the OTDCP25SA22MD used for
- What are the key ratings
- Is the enclosure suitable for outdoor use
- Is the handle padlockable
- Any wiring notes
Applications
- PV array string isolation on the DC side of inverters.
- DC battery isolation in energy storage systems.
- General DC maintenance isolation where IP65 protection is required.
Customer Reviews
Overall rating: 5 Star Product
"Safety handle is clear for lock off and the enclosure feels robust outdoors." - Hannah D, Solar Installer, 5 Star Product
"Dual string layout keeps rooftop isolators neat while meeting site procedures." - Ravi P, PV Engineer, 5 Star Product
An enclosed dual string DC switch disconnector for isolating two PV strings or other DC circuits in one IP65 housing, rated 25 A up to 1000 V DC.
25 A DC operational current with up to 1000 V DC operational voltage, Ui 1000 V and Uimp 8 kV.
Yes. The enclosure is glass reinforced polycarbonate, UV protected and IP65 rated for outdoor or indoor use.
Yes. The red and yellow safety selector handle is padlockable for lock off procedures. The cover is interlocked with a defeatable interlock for authorised maintenance.
Threaded entries and knockouts allow top or bottom cable entry, including provision for parallel cabling. Follow ABB wiring diagrams and polarity guidance for dual string isolation.
| Alternative Product SKU | OTDCP25SA22MD |
|---|---|
| Manufacturer Part Number | 1SCA131851R1001 |
| Manufacturer | ABB |
| Number of Poles | 4 Pole |
| Max. rated operation voltage Ue AC | 1000 |
| Number of switches | 1 |
| Rated operating voltage | 1000 |
| Device construction | Complete device in housing |
| Type of control element | Turn button |
| Colour control element | Red |
| Rated permanent current Iu | 25A |
| Voltage | 1000VDC |
| IP Rating | IP65 |
| Connection Type | Screw |
| Packed Quantity | 1 |
| Height | 167mm |
| Width | 108mm |
| Depth | 142mm |
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