Pronto Energy 
DS1-32EL/4P Photovoltaic DC Isolating Switch
The DS1-32EL/4P 4P photovoltaic DC isolating switch provides lockable, non-polar isolation for PV systems up to 1200V. Compliant with IEC 60947-3, it safely disconnects solar circuits during maintenance and emergency shutdown.
Applications & circuit protection
The DS1-32EL/4P DC isolator is designed for safe isolation and control between PV modules and the inverter, with non-polar polarity for flexible wiring.
- Isolation between PV modules and inverter
- Maintenance and emergency shutdown
- Photovoltaic DC circuits
- Combiner box and inverter disconnection
Construction & operating reliability
The DS1-32EL/4P features a lockable operating handle, dedicated DC arc-extinguishing contacts and non-polar connection, with IP20 or IP66 enclosure options.
- Lockable for safe isolation
- Dedicated DC arc-extinguishing contacts
- Non-polar polarity (+ and – interchangeable)
- IP20 or IP66 enclosure options
Wiring Diagram
Technical Parameter
| Parameter | Value |
| Model | DS1-32EL/4P |
| Compliant with standards | IEC 60947-3; AS 60947.3 |
| Application | Outdoor photovoltaic DC isolation and control |
| Usage category | DC-PV1 / DC-PV2 |
| Connection configuration | 4P |
| Rated working voltage | 1200 V DC |
| Rated current | 16–32 A |
| Connector / termination | Direct cable |
| Rated insulation voltage (Ui) | 1200 V |
| Rated impulse withstand voltage (Uimp) | 8.0 kV |
| Polarity | Non-polar; + and − may be interchanged |
| Mechanical life | Rated 9,700 cycles; tested to 20,000 cycles |
| Electrical life | 300 operations |
| Arc extinguishing time | ≤2 ms at 1000 V DC / 32 A |
| Protection level | IP66 |
| Storage temperature | −40 °C to +85 °C |
| Installation method | Screw / wall mounting |
Standards & certifications
The DS1-32EL/4P is designed in accordance with IEC 60947-3; AS 60947.3 and is available with TUV, CE, SAA certifications. Certification documentation can be provided according to project and destination-market requirements.
- Standard: IEC 60947-3; AS 60947.3.
- Certifications: TUV, CE, SAA.
- Protection level: IP20 (where applicable).
OEM & B2B supply support
KORLEN supports distributors, OEM manufacturers, electrical contractors and project buyers with product selection, samples, technical documentation and commercial quotations.
If the DS1-32EL/4P configuration does not match your project, send us the required specifications, quantity and destination market. Our team can help identify a suitable configuration.
- Samples available for product evaluation.
- Flexible quantities for project and B2B purchasing.
- OEM and ODM support for suitable projects.
- Technical documentation and certification support available.
Frequently Asked Questions
The DS1-32EL/4P provides safe isolation and disconnection for photovoltaic DC circuits during maintenance and emergencies.
The DS1-32EL/4P is rated for 1200V DC at up to 32A.
Non-polar design means the + and – terminals can be interchanged, simplifying wiring in PV installations.
Yes, the operating handle can be locked in the OFF position for safe maintenance.
