Hager MCB 100A 3P 10kA – HLF390S (Miniature Circuit Breaker)
The Hager HLF390S is a 3-pole miniature circuit breaker (MCB) that protects distribution circuits against overload and short-circuit faults. With a 100 A rated current, C-curve tripping, and 10 kA breaking capacity, it's built for higher-demand three-phase circuits in residential, commercial, and industrial panels, and is Made in France to Hager's standard build quality for UAE installations.
Key Features
- 3-pole (3P) configuration for three-phase circuit protection
- 100 A rated current for high-demand distribution circuits
- C-curve tripping characteristic, suited to circuits with moderate inrush current
- 10 kA breaking capacity (Icn to IEC 60898-1, Icu to IEC 60947-2) for reliable fault interruption
- Compact 4.5-module width for space-efficient panel integration
- Rated insulation voltage 500 V, 6000 V impulse withstand, Pollution Degree 3
- IP20 protection, screw terminals (top and bottom), -25 °C to 70 °C operating range
- Complies with IEC 60898-1 and IEC 60947-2; RoHS compliant and REACH-SVHC free
Technical Specifications
| Specification |
Details |
| Brand |
Hager |
| Model |
HLF390S |
| Device Type |
MCB (Miniature Circuit Breaker) |
| Rated Current |
100 A |
| Poles |
3P |
| Tripping Curve |
C-curve |
| Rated Operational Voltage |
415 V AC |
| Rated Insulation Voltage |
500 V |
| Breaking Capacity |
10 kA (Icn per IEC 60898-1, Icu per IEC 60947-2) |
| Impulse Withstand Voltage |
6000 V |
| Pollution Degree |
3 (IEC 60664 / 60947-2) |
| Terminal Type |
Screw terminals, top and bottom; 360° mounting capable |
| Mounting Width |
4.5 modules |
| IP Rating |
IP20 |
| Frequency |
50–60 Hz |
| Operating Temperature |
-25 °C to 70 °C |
| Standards |
IEC 60898-1, IEC 60947-2 |
| Origin |
Made in France |
Applications
- Residential complexes and villas with three-phase supply
- Commercial offices, malls, schools, and healthcare facilities
- Industrial power distribution systems
- Projects requiring high-capacity 3-pole, 100A circuit protection
FAQ
-
What does the 10kA rating mean?
10kA is the breaking capacity — the maximum short-circuit fault current the MCB can safely interrupt without damage. It's matched to the fault levels expected on typical UAE three-phase distribution circuits.
-
What is a C-curve MCB used for?
C-curve breakers tolerate higher inrush/starting currents (roughly 5–10x rated current) before tripping instantly, making them suitable for circuits with motors, transformers, or other inductive loads — as opposed to B-curve breakers used for simple resistive/lighting circuits.
-
How many poles do I need for this circuit?
A 3-pole MCB switches and protects all three phases of a three-phase circuit simultaneously. Use a 3P breaker (like the HLF390S) for three-phase loads; single-phase circuits only need a 1P or 2P device.
-
Is this MCB compatible with other Hager distribution boards?
Yes. The HLF390S is a standard DIN rail MCB and mounts directly onto Hager consumer units and panel boards alongside other Hager modular devices (RCCBs, RCBOs, isolators) on the same busbar system.
-
Can I install this myself?
No. MCBs are installed inside a distribution board and connected to live supply conductors — this must be done by a licensed electrician in accordance with local wiring regulations.
