SEPHCO BL Series Resistive Load Banks

For Permanent Installation To Periodically Test & Exercise Stand-By Generators & UPS Systems. Weatherproof Construction, Complete With Controls.

resistive load bank
BLOV Series 20kW To125kW
Series BL2V, BL4V, BL6V, BL12V, BL18V, BL24V From 150kW to 2500kW Models


  • Weatherproof to IP55 (NEMA3R)
  • Vertical Air Discharge
  • Compact Design
  • Integrated Control System, Remote Or Local
  • Modbus Interface Available As An Option
  • Corrosion Resistant Marine Acrylic Finish
  • Stainless Steel Vibration & Immersion Proof Resistors
  • Optional stainless steel construction


  • Data Centres
  • Hospitals
  • Office Buildings
  • Telecommunication Sites
  • Essential Services
  • Mining
  • Military Establishments
  • Mining

BL Series Description

BL series load banks are designed for permanent installation, suitable for harsh outdoor environments. Control arrangement and type is specifically designed for testing and exercising stand-by generators and UPS systems.  Sephco load banks incorporate immersion proof and vibration proof stainless steel resistors.

Safety features include the Sephco “Triple Interlock” load protection system, guarding against fan cooling failure, airflow restriction, high temperature and fan reversal. Unique features of Sephco load banks include circuit breaker protection for each load group and full accessibility to switchgear components and resistors.

Installation of BL type load banks will ensure reliable back-up power from generators. Frequent exercising of generators will prevent wet stacking, cylinder bore glazing and reduce emissions.


BL series load banks are supplied with full control facility, locally fitted to the load bank or supplied loose for remote control. Additional options include Modbus interface.