Eaton SRN3RY12U 12U Industrial Wall Enclosure NEMA 3R

Overview :

The Eaton SRN3RY12U is a 12U wall-mount industrial rack enclosure designed to protect 19-inch rack equipment in harsh and semi-outdoor environments. It is deployed by infrastructure engineers, industrial IT teams, and security system integrators to house network, power, and edge computing equipment where environmental exposure is a concern.

This enclosure supports standard EIA-310 19-inch rack equipment with a usable rack depth of up to 23 inches and a load capacity of 200 lb (90.7 kg). It includes adjustable front and rear mounting rails and integrated cooling fans with a thermal switch to regulate internal temperature. The NEMA 3R rating provides protection against rain, sleet, snow, and falling debris, ensuring equipment uptime in exposed deployments.

The SRN3RY12U is typically installed in industrial facilities, transportation infrastructure, utility sites, and outdoor network edge environments. It is also used in security and first-responder deployments where network equipment must operate reliably in non-conditioned spaces.

It integrates with standard rack-mounted switches, patch panels, PDUs, and UPS systems within 120V and 208V ecosystems. Cable ingress is supported through sealed conduit openings, maintaining environmental protection while enabling structured power and data routing. The enclosure’s locking steel cabinet provides physical security against unauthorized access and tampering.

In a typical deployment, the unit is wall-mounted in an outdoor or semi-protected area, with network switches and patch panels installed on adjustable rails and power distribution mounted internally. Built-in fans activate based on temperature thresholds to prevent overheating in enclosed environments.

This enclosure should not be used in fully submerged or washdown environments requiring higher ingress protection ratings (e.g., NEMA 4 or IP66). It is also not intended for high-density data center deployments where airflow management, depth, and scalability requirements exceed wall-mounted enclosure capabilities.

Key Features

• NEMA 3R rating protects against rain and debris

• Supports 12U 19-inch rack equipment mounting

• Adjustable rails fit devices up to 23-inch depth

• Integrated fans with thermal switch cooling

• Lockable steel enclosure for physical security