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1SCA134379R1001 ABB OTDC25US4 4 Pole 1000VDC 40A Switch Disconnector
MPN: 1SCA134379R1001
Alt. SKU: OTDC25US4
Why Choose the OTDC25US4 [1SCA134379R1001]
The OTDC25US4 photovoltaic disconnect switch is designed for reliable isolation in solar power systems. It features a US single-wire break configuration and supports double circuit operation. The switch is rated for 25 A at 600 VDC (UL) and 660 VDC (IEC), as well as 16 A at 1000 VDC (IEC), ensuring compatibility with a range of PV installations. The base-mounted unit includes a terminal bolt kit for secure connections; however, the handle and shaft must be ordered separately to complete the assembly. This switch offers robust performance and compliance with international standards for safe and efficient PV system disconnection.
Technical Specification
- Function: Photovoltaic disconnect switch with US single-wire break.
- Voltage Rating: Rated operational voltage up to 1000 V DC.
- Current Rating: 25 A at 660 V DC (IEC), 25 A at 600 V DC (UL).
- Contact Configuration: Double circuit, 4-pole switch.
- Insulation and Impulse Ratings: Rated insulation voltage 1000 V; rated impulse withstand voltage 8 kV.
- Degree of Protection: IP20 (front).
- Terminal Type and Size Range: Screw terminals supporting 2.5 to 16 mm² (12 to 6 AWG) cable cross-section.
- Mounting Type: Base and DIN-rail mounting options.
- Mechanical Data: Handle and shaft not included; shaft diameter 6 mm; positive opening torque 0.4–0.8 N·m.
- Standards Compliance: UL 508i and IEC 60947-1, -3 certified.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the OTDC25US4 PV Disconnect Switch?
The OTDC25US4 is a photovoltaic disconnect switch designed for use with a US single-wire break.
What are the voltage and current ratings for this switch?
It has a voltage rating of up to 1000 V DC and a current rating of 25 A at 660 V DC (IEC) and 25 A at 600 V DC (UL).
What is the terminal size range supported by the OTDC25US4?
The switch supports screw terminals with a cable cross-section range of 2.5 to 16 mm² (12 to 6 AWG).
How can the OTDC25US4 be mounted?
This switch can be mounted using base mounting or DIN-rail mounting options.
Are the handle and shaft included with the switch?
No, the handle and shaft need to be ordered separately.
What are the insulation and impulse ratings of the switch?
The rated insulation voltage is 1000 V, and the rated impulse withstand voltage is 8 kV.
What standards does the OTDC25US4 comply with?
It is certified to UL 508i and IEC 60947-1, -3 standards. See the manufacturer's data sheet for standards and approvals.
| Alternative Product SKU | OTDC25US4 |
|---|---|
| Manufacturer Part Number | 1SCA134379R1001 |
| Manufacturer | ABB |
| Barcode | 6417019631806 |
| Number of Poles | 4 Pole |
| Number of switches | 1 |
| Rated operating voltage | 1000 |
| Device construction | Built-in device fixed built-in technique |
| Type of control element | Other |
| Rated permanent current Iu | 40A |
| Voltage | 1000VDC |
| Degree of protection (IP) | IP20 |
| Nema Rating | 1 |
| Type of electric connection | Screw connection |
| Packed Quantity | 1 |
| Height | 89mm |
| Width | 54.5mm |
| Depth | 87mm |
| HS Code | 85365080 |
| Country of Manufacture | Estonia |
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