Enclosed DC Switch IP67 Nema 4X 2 Pole 1 String 25A 700VDC Lockable Rotary Handle

Enclosed DC Switch – IP67 / NEMA 4X

2 Pole • 1 String • 25A • 700 VDC

Model: SI25-PEL64R-2

The SI25-PEL64R-2 Enclosed DC Switch is a high-performance, purpose-built DC isolator designed for photovoltaic (PV) applications requiring higher current capacity while maintaining safe and reliable DC disconnection. Rated at 25A, 700 VDC, this model is ideal for single-string solar circuits in residential, commercial, and industrial installations.

Purpose-Built for True DC Switching

Unlike AC-modified devices, the SI25-PEL64R-2 uses true DC switching technology, ensuring controlled arc extinction during switching under load. This design improves operational safety, reduces contact wear, and delivers long-term electrical reliability in high-current DC environments.

Rugged Enclosure for Demanding Environments

The switch is housed in a durable IP67 / NEMA 4X enclosure, providing excellent protection against dust, water ingress, corrosion, and UV exposure. This makes it suitable for indoor and outdoor installations, including rooftop, ground-mount, and other exposed solar locations.

Key Features & Benefits

• 2-pole DC isolator for safe isolation of a single PV string
• Rated at 25A, 700 VDC for higher current DC applications
• IP67 / NEMA 4X enclosure for harsh and outdoor environments
• Lockable rotary handle to support lockout/tagout safety procedures
• True DC switching technology (not AC-modified)
• High-performance DC arc suppression for safe disconnection under load
• Clear and positive ON/OFF position indication
• UV-resistant, corrosion-resistant enclosure materials
• Long mechanical and electrical service life

Safety & Installation

The lockable rotary operating handle allows the switch to be secured in the OFF position, helping protect installers and maintenance personnel during servicing. Clear switch status indication assists with fast inspection and approval by Authorities Having Jurisdiction (AHJs).

The enclosed design provides sufficient internal space for cable termination, helping reduce installation time and minimize wiring errors on site.

Typical Applications

• Residential rooftop solar PV systems
• Commercial and industrial PV installations
• Single-string DC isolation
• Inverter DC input isolation
• Utility and authority-approved solar projects