Circuit breakers: selection and application
An overview of how circuit breakers are selected for a low-voltage installation.
Types of circuit breakers and where each is used
MCB, MCCB, ACB, VCB, RCCB and RCBO — what each one is for, and how they differ.
ABB 100 A MCCB — SACE Tmax
A moulded case circuit breaker class used at sub-main and motor feeder level.
Power factor controller RVC-12
What a power factor controller does, and how its settings affect the capacitor bank it switches.
TNS series voltage regulator for lifts and elevators
A three-phase regulator class used where a lift motor needs a stable supply through its starting cycle.
Ground enhancing material (GEM)
How ground enhancing materials and backfill compounds reduce earth resistance and keep it stable.
ABB REF615 feeder protection relay
A feeder protection relay for medium-voltage switchgear, and what it protects against.
SAKO automatic voltage regulator
Automatic voltage regulators for industrial and commercial loads.
Earthing backfill compound
What earthing backfill compound is, what it changes, and how to specify it correctly.
Choosing branded circuit breakers over unbranded equivalents
What actually differs between a branded breaker and an unbranded one, and why the difference matters at the panel.