Schneider Masterpact NW12H1 1250A 4-Pole Fixed ACB, Neutral Left (48036)

The Schneider Electric Masterpact NW12H1 (reference 48036) is a 1250 A, 4-pole, fixed-mount air circuit breaker supplied without a Micrologic trip unit, with the neutral pole positioned on the left-hand side. It is built for main incomer and sub-main protection in commercial and industrial low-voltage switchboards rated up to 1250 A, at the H1 (65 kA) breaking-capacity class. Because it ships as a frame only, the operating Micrologic trip unit is selected and ordered separately to match the installation.

Quick Specifications

• Brand: Schneider Electric
• Range: Masterpact NW
• Model: NW12H1 (reference 48036)
• Rated current (In): 1250 A
• Poles: 4 (4P), neutral pole on the left-hand side
• Mounting: Fixed
• Trip unit: Not included — Micrologic ordered separately
• Performance class: H1, Icu 65 kA at 440 V AC, Ics equal to 100% of Icu
• Rated operational voltage (Ue): up to 690 V AC
• Genuine Schneider Electric stock — fast UAE and GCC dispatch
• Neutral position and trip-unit compatibility checked by our engineering team before shipping

Applications and Compatibility

The NW12H1 is used as a main or tie circuit breaker in distribution boards, main LV panels, and generator or transformer incomers rated up to 1250 A, where a 65 kA breaking capacity suits the installation. As a fixed device it is bolted permanently into the switchboard. The left-hand neutral position must match your busbar and incomer layout, so confirm the neutral side against your panel drawings before ordering.

This frame accepts Schneider Micrologic 2.0, 5.0, and 6.0 electronic trip units, including the ammeter (A), power (P), and harmonic (H) variants, so you can match protection, metering, and communication to the project. If you are unsure which Micrologic unit and accessories your panel needs, our engineering team will confirm the correct configuration before dispatch.

Why Buy From Electrical Junction

• Genuine Schneider Electric product supplied with full manufacturer documentation
• Dubai stock for fast dispatch across the UAE and wider GCC
• Export delivery to Africa and CIS, with standard export paperwork and datasheets to help with SABER and SASO registration
• Engineer-backed technical support to confirm neutral position, trip unit, and accessory compatibility before you order

Frequently Asked Questions

What does Neutral Position Left Hand side mean on this breaker?

On this 4-pole NW12H1 the neutral pole is located on the left-hand side of the breaker. The neutral position must match your busbar and cable-entry layout, so confirm your panel needs the neutral on the left before ordering. If you require the neutral on the right, contact our engineer and we will supply the correct alternative reference.

Does the Masterpact NW12H1 come with a trip unit?

No. The NW12H1 (48036) is supplied without a trip unit. You order a Schneider Micrologic trip unit separately to make the breaker operational, which lets you match the protection and metering to your installation.

Which Micrologic trip unit is compatible with the NW12H1?

The NW12H1 accepts Micrologic 2.0, 5.0, and 6.0 electronic trip units, including the ammeter (A), power (P), and harmonic (H) variants. Micrologic 2.0 gives basic protection, 5.0 adds adjustable protection with metering, and 6.0 adds integral earth-fault protection. Our engineer can confirm the right unit for your load.

What is the breaking capacity of the NW12H1?

The NW12H1 is the H1 performance class, with a rated ultimate breaking capacity (Icu) of 65 kA at 440 V AC and a rated service breaking capacity (Ics) equal to 100% of Icu. This makes it suitable for installations with moderate to high prospective short-circuit currents.

Is this a genuine Schneider Electric circuit breaker?

Yes. Electrical Junction supplies genuine Schneider Electric Masterpact breakers with manufacturer documentation, serving contractors, panel builders, and procurement teams across the UAE, GCC, Africa, and CIS.

Can you deliver the NW12H1 to Saudi Arabia and other export markets?

Yes. We dispatch from our Dubai hub to Saudi Arabia and the wider GCC, as well as Africa and CIS markets. Shipments include standard export paperwork, and we provide manufacturer datasheets to help with SABER conformity registration, which is completed by the importer of record.