Who is Noark Electric and what does it make?
Noark Electric is a manufacturer of low-voltage electrical equipment. The range covers air circuit breakers (ACB) in the Ex9A16N series, moulded case circuit breakers (MCCB), miniature circuit breakers (MCB), residual current devices (RCD and RCBO), modular contactors and distribution equipment for low, medium and high voltage. We can quote from this whole range for industrial or building switchboards.
The Ex9A16N series of air circuit breakers covers rated currents from 630 to 1600A, in fixed (F) or draw-out (D/O) versions, with SU3.0, SU4.0 and SU5.0 digital trip units and LSI protection (long-time, short-time, instantaneous). The range of surge protection devices (SPD) and load break switches allows a switchboard to be equipped from a single product range.
For Romania, where Noark already has a subsidiary in Bucharest, the range makes sense for switchboards in commercial buildings, logistics centres or photovoltaic projects.
What do we supply from the Noark Electric range?
| Product | Description |
|---|---|
| Ex9A16N Air Circuit Breakers | A series of air circuit breakers (ACB) for main switchboards, with rated currents of 630, 800, 1000, 1250 and 1600A, in 3 or 4 poles, in fixed (F) or draw-out (D/O) versions. The SU3.0-SU5.0 digital trip units provide LSI protection, adjustable for selectivity with the rest of the installation. For a quotation, the customer must send the rated current required, the number of poles and the mounting type. |
| MCCB and MCB Circuit Breakers | The range of circuit breakers for protecting secondary circuits — MCCB for higher currents, in a moulded case, and MCB for final circuits, DIN-rail mounted. They are complemented by RCD and RCBO residual current devices for fault current protection. To order, the customer must send the rated current, the tripping curve and the number of poles. |
| Modular Contactors and Distribution Equipment | Modular contactors for controlling lighting circuits, alongside power distribution equipment for low, medium and high voltage. They complete the range for an integrated switchboard, from protection to control and distribution. For a quotation, the customer must send the switchboard diagram or the installed power. |
| Surge Protection Devices (SPD) and Load Break Switches | Devices for protection against transient overvoltages, fitted at the switchboard incomer, plus load break switches and cylindrical fuses for isolating circuits. Useful in projects with lightning risk or sensitive electronic equipment. To order, the customer must state the rated voltage of the installation and the protection level required. |
Why Noark Electric?
- Low-voltage switchgear range — from miniature circuit breakers to 1600A air circuit breakers
- SU3.0-SU5.0 digital trip units with LSI protection on the Ex9A16N series
- Fixed and draw-out versions in the air circuit breaker series
- Subsidiary already present in Romania, with reference projects in buildings and infrastructure
Which Noark Electric codes and series are requested most often?
| Code | Description |
|---|---|
| Ex9A16N 3P D/O 630A | air circuit breaker, draw-out version, 3 poles, 630 A |
| Ex9A16N 3P D/O 800A | 3 poles, draw-out version, rated current 800 A |
| Ex9A16N 3P D/O 1000A | 3 poles, draw-out version, rated current 1000 A |
| Ex9A16N 3P D/O 1250A | 3 poles, draw-out version, rated current 1250 A |
| Ex9A16N 3P D/O 1600A | 3 poles, draw-out version, rated current 1600 A |
| Ex9A16N 3P F 630A | 3 poles, fixed mounting, rated current 630 A |
| Ex9A16N 3P F 800A | 3 poles, fixed mounting, rated current 800 A |
| Ex9A16N 3P F 1000A | 3 poles, fixed mounting, rated current 1000 A |
| Ex9A16N 3P F 1250A | 3 poles, fixed mounting, rated current 1250 A |
| Ex9A16N 3P F 1600A | 3 poles, fixed mounting, rated current 1600 A |
| Ex9A16N 4P D/O 630A | 4 poles, draw-out version, rated current 630 A |
| Ex9A16N 4P D/O 800A | 4 poles, draw-out version, rated current 800 A |
| Ex9A16N 4P D/O 1000A | 4 poles, draw-out version, rated current 1000 A |
| Ex9A16N 4P D/O 1250A | 4 poles, draw-out version, rated current 1250 A |
| Ex9A16N 4P D/O 1600A | 4 poles, draw-out version, rated current 1600 A |
Where is Noark Electric equipment used?
- Commercial buildings and offices — main and distribution switchboards
- Logistics centres — protection and distribution for large installations
- Hotels and sports halls — switchgear for building switchboards
- Photovoltaic projects — protection and distribution equipment
- Healthcare and education — switchboards for public buildings
How do we supply Noark Electric in Romania?
For Noark Electric we work from the manufacturer's technical documentation and from the presentation of its Romanian subsidiary — stock and lead time are confirmed in the quotation. We bring in the equipment to order through supply channels in the EU, usually in 1–4 weeks from confirmation, depending on the model and quantity. For an accurate quotation we need the rated current, the number of poles, the mounting type and, for air circuit breakers, the type of trip unit required. We do not promise permanent availability from stock on any series.
Selectivity compatibility between Noark series and switchgear already installed is established after a case-by-case technical check.
Frequently asked questions about Noark Electric
What does “D/O” mean on Noark Ex9A16N circuit breakers?
D/O is the abbreviation for the draw-out version, in which the contact block can be removed from the fixed housing for maintenance or testing without disconnecting the power cables in the switchboard. The version marked “F” has fixed mounting, where the breaker stays permanently connected in the switchboard. The choice depends on the maintenance requirements of the installation and the budget available for the distribution board.
What rated currents does the Noark Electric Ex9A16N series cover?
The Ex9A16N series is available in steps of 630, 800, 1000, 1250 and 1600 A, in both 3-pole and 4-pole versions, and the design can be fixed or draw-out. The choice of current step depends on the total load of the switchboard and the diversity factor calculated at design stage.
How many poles does an air circuit breaker need for a three-phase switchboard with neutral?
A three-phase switchboard with neutral distribution requires the 4-pole version, which also switches the neutral conductor, unlike the 3-pole version, used where the neutral must not be switched. The Ex9A16N series offers both configurations, in the same current steps, from 630 to 1600 A.
Do you supply Noark Electric circuit breakers in Romania?
Yes, we source the Ex9A16N breakers presented above on request, starting from the Noark Electric technical catalogues; the range is not permanently held in our own warehouse. Expect, as a rule, 1–4 weeks from placing the order, depending on the configuration chosen. For an accurate quotation, state the current and the number of poles required.
What should I send for a Noark air circuit breaker quotation?
It helps to state the rated current required, the number of poles, 3 or 4, the design type wanted, fixed or draw-out, and the estimated short-circuit power of the installation. These details allow the correct model to be chosen from the Ex9A16N series and avoid wrongly sizing the switchboard protection.
How do I request a Noark Electric quotation?
Send the Noark Electric code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.
Request a quoteUpdated: 12 November 2026 · Sources: Noark Electric, Noark Electric România, Revista Construcțiilor (manufacturer documentation)