Technical Specifications

The K-LB-2.30G limits induced transients from lightning or switching operations. It diverts current to earth during overvoltage pulses. The device is HART transparent for uninterrupted communication.

General Specifications

Functional Safety

Electrical Specifications

Connection Assignment

Ratings

Surge Ratings

Voltage Protection Level (Up)

Performance Characteristics

Ambient Conditions

Mechanical Specifications

Hazardous Area Certification (ATEX)

ATEX Electrical Parameters

Hazardous Area Certification (IECEx)

CSA Approval

Conformity Standards

Directive Compliance

Installation Guidelines

Follow these steps to install your K-LB-2.30G surge protection barrier correctly.

1. Mount the DIN Rail – Install 35 mm DIN rail per EN 60715 standard.

2. Clip the Device – Snap the K-LB-2.30G onto the DIN rail firmly.

3. Connect Earth Ground – Attach high quality ground connection first.

4. Wire Unprotected Side – Connect terminals 1,2 and 3,4 to field side.

5. Wire Protected Side – Connect terminals 5,6 and 7,8 to control side.

6. Match Potential – Ensure device has same potential as protected equipment.

7. Label the Device – Use front labeling space for circuit identification.

8. Verify Ground System – Check ground installation per applicable regulations.

Always connect the K-LB-2.30G to high quality ground connections. Install the ground system in accordance with applicable regulations.

Wiring Diagram

Package Contents (No Certificates or Warranty Terms)

Your shipment for product number K-LB-2.30G includes the following items:

• 1 x K-LB-2.30G Surge Protection Barrier

• 1 x Installation instruction sheet (printed)

• 1 x Labeling strip for front marking

Note: DIN rail is not included. Screw terminals are pre-installed on the device.

Frequently Asked Questions (FAQ)

1. What is the maximum surge current rating for the K-LB-2.30G?
Total discharge current reaches 20 kA (8/20 µs) for one event. Per line rating is 10 kA for one event or 5 kA for ten events.

2. Is the K-LB-2.30G HART transparent?
Yes. The K-LB-2.30G is HART transparent for uninterrupted communication. Insertion loss is minimal across HART frequencies.

3. What is the SIL rating for this surge protection barrier?
The K-LB-2.30G is rated SIL 3 per IEC/EN 61508. This suits safety critical applications.

4. What is the maximum continuous operating voltage?
Maximum continuous operating voltage (Uc) is 30 V DC. Nominal operating voltage is 24 V DC.

5. Can the K-LB-2.30G be used in hazardous areas?
Yes. This device carries ATEX and IECEx certifications. Marking is II 2(1)G Ex ia IIC T6/T5/T4.

6. What is the impulse reset time after a surge event?
Reset time is <30 ms. The device returns to normal operation automatically without manual intervention.

Why Choose This Model?

The K-LB-2.30G offers robust surge protection for 30V signal circuits. Its 2-channel design protects 4 signal lines in a compact 12.5 mm width. The 20 kA total discharge current handles severe lightning and switching transients. The SIL 3 rating supports safety instrumented systems per IEC 61508. The ATEX and IECEx certifications allow installation in hazardous areas with Ex ia IIC approval. The HART transparency ensures no interference with smart instrument communication. The auto reset operation returns to service without manual intervention. The wide temperature range (-30°C to +80°C) suits outdoor and industrial environments. Choose this K-LB-2.30G for protecting analog inputs, RTD circuits, solenoid drivers, and switch inputs in refineries, chemical plants, power stations, and offshore platforms.