# Zener Barrier Shanghai RDAQ-4 Ex [Ia] IIC – Industrial Safety

The **Zener Barrier Shanghai RDAQ-4**, manufactured by **Shanghai Rongde Engineering Equipment Co., Ltd.**, is a critical component for ensuring safety in hazardous areas. This **Type Rdaq-4 Zener Barrier** provides reliable protection against overvoltage conditions within explosive atmospheres. Designed for industrial applications, it is essential for maintaining operational integrity and preventing electrical hazards.

This **Zener Barrier** features an Ex-proof Ex \[Ia\] Iic A certification, guaranteeing its suitability for use in potentially explosive environments. With a maximum Uo of 27.8V and Io of 76 mA, it efficiently safeguards sensitive equipment. The secondary channel (B) offers further functionality with a Ui of 27.8V, Uo of 18.8V, and a maximum Io of 310 mA and Po of 1.5W. Its lightweight design (260 Gm) ensures easy installation and integration into existing systems.

Key Features:

-   **Ex-proof Certification:** Ensures safety in hazardous environments.
-   **Efficient Protection:** Protects against overvoltage conditions.
-   **Versatile Design:** Suitable for a wide range of industrial applications.
-   **Secondary Channel:** Adds functionality and flexibility.

**Specifications:**

Maximum Uo: 27.8V

Io: 76 mA

Ui (Secondary Channel B): 27.8V

Uo (Secondary Channel B): 18.8V

Io (Secondary Channel B): 310 mA

Po (Secondary Channel B): 1.5W

Weight: 260 Gm

The **Zener Barrier Shanghai RDAQ-4** is a dependable solution for industrial automation and control systems. Trust **Shanghai Rongde Engineering Equipment Co., Ltd.** for reliable performance and enhanced safety. Enhance your industrial or automation system with the **RDAQ-4**. For more details contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** Shanghai Rongde
- **Type:** Industrial Automation > Safety Components > Zener Barriers
- **Tags:** Ex-proof, hazardous area, industrial automation, overvoltage protection, RDAQ-4, Shanghai RDAQ-4, Shanghai Rongde, Zener Barrier

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Used | 999.00 USD | In stock |

## Images

- Zener Barrier Shanghai RDAQ-4 Ex [Ia] IIC – Industrial Safety-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/zener-barrier-shanghai-rdaq-4)
> Updated: 2026-10-03