Recent Articles
The difference between AX (auxiliary) and AL (alarm) accessories for MCCBs and MCBs
An alarm switch, designed AL, is used to send a signal that shows whether or not the MCCB or MCB was tripped based upon an electrical fault. It will not operate or close if the MCCB or MCB is operated manually. An auxiliary switch, designed AX, is ...
ETU User Guide for UTS150i/UTS250i MCCB
The UTS150i/UTS250i Smart series MCCB have four different Electronic Trip Units (ETU) options to choose from: ETSi Standard/LSIG relay, current measurement ETMi Multi-Function/LSIG relay, current measurement, communication function ETHi High ...
UL Listed Smart MCCB Product Overview and Selection Catalog
Susol UL Smart MCCB, developed by combining digital technology with LS ELECTRIC's power equipment technology accumulated for more than 40 years, has functions for energy consumption and power management. Its relay and metering functions for line ...
UL Listed Molded Case Circuit Breaker Overview and Selection Catalog
The Susol series MCCB are a perfect solution for UL 489 branch protection demands and are designed to protect low voltage electrical systems from damage caused by overloads and short circuits. For power distribution High breaking capacity Optimum ...
UL Listed Air Circuit Breaker Overview and Selection Catalog
Susol ACB provides the total solution with an advanced trip relay for measurement, diagnosis, analysis, and communication as well as functions for absolute protective coordination and electric power monitoring systems. Modular designs High (130kA) ...
Popular Articles
Can I use a 3 pole MCCB on a single phase system?
Yes. LS UL489 Molded Case Circuit Breakers (MCCB’s) are suitable for use in single phase systems. LS Susol UTE/UTS 3 pole MCCBs may be applied to single phase systems provided that the MCCB is sized appropriately per the given load. Furthermore, ...
H100+ Lead Lag Setup
H100+ drives have a built-in, lead-lag function which allows for redundant motor control using multiple drives with multiple pumps. Also known as "master-follower" or "lead-lag loadshare", this works without the use of an externally controller such ...
What is the difference between differential and non-differential overloads?
For overloads, differential and non-differential types differ in how they trip (release). Differential is considered to be a higher sensitivity relay as it has phase failure detection. When a difference between two or more of the phases exceeds the ...
Setting up PID on an H100 VFD
PID (which stands for Proportional, Integral, and Derivative) control is a process control loop used to regulate a variable such as temperature or pressure. In terms of VFDs, this is usually accomplished with a transducer that provides feedback to ...
VFDs at High Altitude
LS VFDs installed at an altitude of 1000m above sea level or less do not require a derate. VFDs installed at an altitude between 1000 to 4000m require a derate of 3% for every 300m over 1000m. For calculating the derate, please refer to the attached ...