# Modulebus Cluster Modem ABB TB840A – Industrial Communication Device

The Modulebus Cluster **Modem ABB TB840A**, part number 3BSE037760R1, is a high-performance communication device engineered for demanding industrial environments. This robust modem from **ABB** is designed for reliable data transmission in Zone 2 hazardous areas, ensuring seamless operation in critical applications.

This industrial-grade modem is built to withstand harsh conditions, offering dependable communication for various industrial setups. The **ABB TB840A**, part of the Tb840A G3 Class 1 series, supports efficient data transfer and is certified for use in ATEX Zone 2 and Ex Na IIC T4 hazardous locations. This compact modem, weighing only 210g, is easy to install and operates efficiently in temperatures up to 55°C. Its GC X rating further ensures reliability and safety.

Key Features:

-   **ABB TB840A** designed for industrial communication.
-   Certified for ATEX Zone 2 and hazardous locations.
-   Compact and lightweight design for easy installation.
-   Operates efficiently up to 55°C.
-   Reliable data transmission in challenging environments.

Specifications:

-   Part Number: 3BSE037760R1
-   Series: Tb840A G3 Class 1
-   Weight: 210g
-   Temperature Range: Up to 55°C
-   Certification: ATEX Zone 2, Ex Na IIC T4

The **Modulebus Cluster Modem ABB TB840A** delivers exceptional performance and reliability for industrial automation systems. Choose **ABB** for a dependable communication solution that ensures efficient and safe data transfer. For any inquiries, please contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Industrial Automation > Communication Devices > Modems
- **Tags:** 3BSE037760R1, ABB, Industrial Communication, Modem for hazardous areas, Modulebus Cluster Modem, TB840A

## Variants

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

## Images

- Modulebus Cluster Modem ABB TB840A – Industrial Communication Device-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/modulebus-cluster-modem-abb-tb840a)
> Updated: 2026-10-03