Enclosed DC Switch IP67 Nema 4X 2 Pole 1 String 16A 900VDC Lockable Rotary Handle

Enclosed DC Switch – IP67 / NEMA 4X

2 Pole • 1 String • 16A • 900 VDC
Model: SI16-PEL64R-2

The SI16-PEL64R-2 Enclosed DC Switch is a purpose-built DC isolator engineered
for photovoltaic (PV) power systems requiring safe, reliable disconnection
under load. With a current rating of 16A at 900 VDC, it is ideally suited
for single-string solar applications in residential, commercial, and
industrial installations.

Unlike AC-modified devices, this switch uses true DC switching technology
to ensure controlled arc extinction and long-term electrical reliability. This design
significantly reduces wear on contacts and enhances operational safety throughout the
product’s service life.

The unit is housed in a rugged IP67 / NEMA 4X enclosure, providing exceptional
resistance to dust, water ingress, UV exposure, and corrosion. This makes the SI16-PEL64R-2
suitable for both indoor and outdoor installations, including rooftop and exposed locations.

Key Product Benefits

• True DC isolator designed specifically for photovoltaic applications
• 2-pole configuration for reliable isolation of a single PV string
• Rated at 16A with a maximum operating voltage of 900 VDC
• High-performance DC arc suppression for safe disconnection under load
• IP67 and NEMA 4X enclosure for harsh and outdoor environments
• UV-resistant, corrosion-resistant enclosure materials
• Lockable rotary handle to support lockout/tagout safety procedures
• Clear and positive ON/OFF position indication
• 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 labeling and
visible switching positions assist with rapid inspection and compliance checks by
Authorities Having Jurisdiction (AHJs).

Designed for straightforward installation, the enclosure provides ample internal space for
secure cable termination, reducing installation time and minimizing wiring errors.

Typical Applications

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