LAN-1000IS-2: Surge Protection for Gigabit Network Gateways

Protect Your Network Entry Points Without Grounding

The Vulnerability of Switch Hubs

External cables connected to your switch hub act as entry points for surges. A transient voltage enters through the cable, reaches your switch ports, and damages Ethernet interfaces. This disrupts communication and forces critical equipment offline.

The core issue is that many LAN surge arresters force a difficult choice. You often must choose between MOV technology that requires a grounding connection you may not have, or loose devices that do not integrate into your rack.

You need protection that operates precisely where surges enter the network. It must mount securely to a DIN rail, require no grounding, and protect sensitive Gigabit equipment without compromising signal integrity.

Why Network Managers Choose LAN-1000IS-2

Ingress Point Protection

LAN-1000IS-2 protects switch hubs and access points connected to external infrastructure. This is the precise point where surges breach your network perimeter. Installing it at the ingress port stops transient energy before it reaches the rest of the local area network.

Isolation Transformer Technology (No Grounding Required)

Standard arresters often rely on grounding to function. LAN-1000IS-2 uses isolation transformer technology. This eliminates grounding dependencies, allowing installation in facilities where earthing is difficult. The isolation design also prevents DC bias and power-up transients.

Minimal Signal Loss

With attenuation below 2.0dB across the 1MHz to 100MHz range, your Gigabit network maintains its speed. Bandwidth does not degrade and latency remains stable. This provides precision surge suppression rather than a temporary fix that hampers performance.

DIN Rail Integration

The device mounts securely to a 35mm DIN rail. This eliminates loose surge protectors on shelves and prevents accidental disconnects. Your protection remains integrated and organized within the rack infrastructure.

Gigabit-Speed Compliance

The unit is 1000Base-T (GbE) IEEE 802.3ab compliant. It supports full Gigabit data rates and is compatible with CAT5 and CAT5e cabling. Your infrastructure remains protected at modern speeds.

Environmental Compliance

The device is 100% RoHS compliant and free of hazardous materials. This meets global environmental standards and simplifies procurement approval.

Technical Specifications

Industrial-Strength Impulse Handling

The device features an impulse withstand voltage exceeding 15.0kV and an AC withstand voltage exceeding 4.0kV (1-minute duration). This offers enterprise-level surge suppression engineered for professional networks.

Full Pin Protection

Every pin on the RJ45 connector receives protection, not just data lines. This ensures there are no hidden vulnerabilities on unused conductor pairs.

High Isolation Performance

Insulation resistance exceeds 500 megohms (measured at 500V DC). The isolation transformer design creates complete electrical separation between external surge paths and your internal network. Surge energy flows to the ground, keeping equipment safe.

Signal Integrity

Near-end crosstalk (NEXT) is greater than 30.1dB with a frequency response of 1MHz to 100MHz. Gigabit signals travel cleanly without distortion or crosstalk interference.

Ruggedized Housing

The unit operates in temperatures from -35°C to +60°C with humidity tolerance up to 90%. The ABS plastic housing carries a UL94 V-0 flame rating. The device performs consistently in server rooms or outdoor cabinets.

Ideal Applications

Switch Hubs and Access Points

This includes central network gateways and wireless access points fed by outdoor antennas. LAN-1000IS-2 protects the specific points where external cabling enters your protected space.

Campus and Inter-Building Networks

For facilities where Ethernet cables run between structures, the ingress ports face lightning exposure. Installing this device at the building boundary stops transients while keeping internal networks unaffected.

Remote Networking Equipment

This is ideal for repeater stations and distributed network nodes where grounding is problematic. The isolation transformer technology ensures protection functions correctly even in isolated installations.

Stable Network Infrastructure

The device is designed for networks with established baseline stability, clean cabling, and proper termination. In these environments, it delivers protection without signal compromise.

How It Works: Isolation Transformer Technology

Step 1: Surge Arrival

A lightning transient or switching spike travels through the external Ethernet cable and arrives at the LAN-1000IS-2.

Step 2: Signal Coupling

The isolation transformer windings couple the 1000Base-T Gigabit signal from the external cable to the internal network. The signal passes through efficiently to maintain data integrity.

Step 3: Energy Diversion

Surge energy cannot pass through the transformer. It diverts to the protection circuitry where the transient voltage is clamped and dissipated.

Step 4: Preserved Isolation

Complete electrical isolation ensures surge energy never reaches the switch hub. This prevents cascading damage and keeps Ethernet ports safe.

Technical Comparison

Isolation Transformer vs. Traditional MOV

This design is engineered specifically for switch hub ingress protection and facilities where grounding is unavailable.

Limitations and Compatibility

What It Protects:

✅ Gigabit Ethernet ports on switch hubs (up to 100m runs).

✅ Access points connected to external antennas.

✅ Inter-building network links.

✅ Facilities without reliable ground systems.

What It Is Not Designed For:

❌ Long-distance WAN links (100m+ runs).

❌ Networks with pre-existing signal quality issues.

❌ Power-over-Ethernet (PoE) applications (e.g., PoE security cameras or phones).

❌ Environments requiring Class I data arresters.

The Business Case

Prevent Network Outages

A single surge through a switch hub can fragment the network. LAN-1000IS-2 prevents this cascade and keeps production teams connected.

Avoid Equipment Replacement

Surge damage triggers expensive hardware replacement and reconfiguration. Protection at the ingress point prevents these costs.

Eliminate Service Interruptions

Remote Ethernet repeaters and access points depend on reliability. Preventing damage at the entry point stops communication blackouts.

Streamlined Integration

Unlike loose devices, this unit integrates into your rack environment. This simplifies maintenance and asset tracking.

Certifications and Features

• IEEE 802.3ab Compliant: Certified for Gigabit Ethernet standards.
• Isolation Transformer Technology: Works without grounding dependencies.
• All Pins Protected: Every conductor on the RJ45 is guarded.
• Minimal Signal Loss: Attenuation below 2.0dB maintains Gigabit speeds.
• DIN Rail Mounting: Professional integration into rack infrastructure.
• RoHS Compliant: Lead-free and environmentally safe.
• Proven Impulse Rating: Verified 15.0kV impulse withstand.
• Flexible Application: Suitable for switch hubs, access points, and repeater stations.

LAN-1000IS-2: Precision Network Protection

Your network gateway is a vulnerability point. Protect it with precision without worrying about grounding.

Check out also relevant articles :

• Why tall building needs to be installed lightning rod
• How climate change can affect your lightning protection system
• Benefit of installing Lightning/Surge Counters

Secure Your Network Gateway

View the Catalog

Access the complete LAN-1000IS-2 technical specifications, installation guides, compliance certifications, and frequency response graphs.

Prefer a direct conversation?

Let’s discuss your network topology, cable distances, and grounding situation. We will confirm if LAN-1000IS-2 fits your application or recommend an alternative for your specific needs.