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The GE IS420ESWAH1A is a purpose‑designed industrial network switch module from General Electric (GE) tailored for use within Mark VIe automation and turbine control systems. This unmanaged Ethernet switch provides reliable, real‑time data connectivity between controllers, I/O modules, and networked devices in demanding industrial environments. Its compact design and versatile mounting support make it an ideal component for expanding or maintaining high‑performance control networks where uptime, determinism, and rugged reliability are essential.

Technical Specifications

Specification	Details
Brand	GE (General Electric)
Model	IS420ESWAH1A
Module Type	Industrial Ethernet Network Switch
Target Platform	GE Mark VIe / Mark VIeS Control Systems
Ethernet Ports	8 × 10/100 Base‑TX RJ45
Fiber Port	Single‑mode or optional variants
Buffer Memory	≥ 256 KB MAC buffer
MAC Addresses	4K MAC address support
Auto‑Negotiation	Full/half duplex, HP‑MDIX support
LED Indicators	Power, link, activity, speed
Operating Temperature	‑40 °C to +60/70 °C (industrial range)
Protection Rating	IP20 (control cabinet)
Power Supply	Approx. 12 VDC
Dimensions (approx.)	137 mm × 44 mm × 121 mm
Weight (approx.)	0.3 kg
Mounting	DIN rail / panel clip options
Values are representative of documented Mark VIe ESWA network switch variants.

Recommended Related Models

To build a resilient network and control ecosystem within GE Mark VIe/Mark VIeS systems, consider the following complementary modules:

GE IS420ESWBH1A – 16‑port Ethernet IONet switch
GE IS420UCSBH1A – Universal controller module
GE IS420PPNGH1A – PROFINET communication gateway
GE toolboxST software – Configuration and diagnostics suite

These units work collectively to provide dynamic connectivity, processing, and network bridging functionality.

Popular Allen Bradley Models (For Reference)

Professionals often compare or utilize similar connectivity resources within Allen‑Bradley systems:

Allen‑Bradley 1783‑ETAPNDM EtherNet/IP unmanaged adapter
Allen‑Bradley 1783‑ETAPND8 8‑port unmanaged network module
Allen‑Bradley 1783‑AW8T managed Ethernet switch
Allen‑Bradley 1756‑EN2F ControlLogix Ethernet/IP module

These components serve analogous network distribution and industrial communication roles.

Applications

The GE IS420ESWAH1A network switch delivers dependable connectivity in scenarios such as:

Distributed I/O networks in Mark VIe/VIeS systems
Turbine and generator control communication backplanes
Real‑time data traffic between controllers and field I/O
Industrial Ethernet backbone in process plants
Control cabinet network distribution and expansion
System redundancy and fail‑safe communication topologies

Designed to operate reliably in extreme temperature and vibration conditions, it ensures seamless data exchange where mission‑critical communications cannot fail.

Advantages

Industrial‑Grade Reliability: Built to maintain stable operation across wide temperature ranges and demanding industrial conditions.
High‑Performance Connectivity: Offers unmanaged Ethernet switching with auto‑negotiation and HP‑MDIX for flexible cabling.
Compact, Lightweight Design: At approximately 0.3 kg with a small footprint, ideal for tight control panel spaces.
Flexible Mounting: DIN rail and panel clip installation options add installation versatility.
Seamless Integration: Designed specifically for the GE Mark VIe automation ecosystem.
Clear Diagnostics: LED indicators provide intuitive network status and troubleshooting cues.

Technical FAQs

What type of module is the GE IS420ESWAH1A?
It’s an unmanaged industrial Ethernet network switch for GE Mark VIe control systems.
How many Ethernet ports does it have?
It typically features 8 × 10/100 Base‑TX RJ45 ports.
Does it include fiber connectivity?
Some variants include a single fiber port for extended reach installation.
Can this switch handle industrial operating temperatures?
Yes, it operates in a wide industrial range (‑40 °C to +60/70 °C).
What power supply voltage does it require?
Typically around 12 VDC for control cabinet environments.
Is this switch managed or unmanaged?
It is an unmanaged network switch optimized for real‑time control traffic.
What is its approximate weight?
Around 0.3 kg, making it lightweight yet robust.
How is it typically mounted?
Via DIN rail or panel mount clips in control cabinets.
Is it suitable for hazardous environments?
It has IP20 protection and is suitable for control cabinet installation but not direct exposure to outdoor elements.
What does the LED indicators show?
LEDs typically indicate power, link/activity, and speed status for each port.