Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
ZLBM3-L-1P-3U-M12 Fuse switch disconnector
ABB ZLBM3-L-1P-3U-M12 InLine II three-pole 630 A low-profile fuse switch disconnector with a single operating handle, M12 bolted terminals and compatibility with DIN NH3 fuse links.
£399.39
Why Choose the ABB ZLBM3-L-1P-3U-M12 Fuse Switch Disconnector?
The ABB ZLBM3-L-1P-3U-M12, product code 1SEP620173R1200, is a heavy-duty three-pole fuse switch disconnector from the established ABB InLine II range. Designed for switching, isolation and fuse protection in high-current low-voltage systems, it provides a dependable solution for industrial switchboards, distribution assemblies and infrastructure installations.
This low-profile model combines three-pole operation with a single operating handle and secure M12 bolted terminals. Its vertical construction and standard 185 mm phase spacing support efficient integration into modern distribution boards, while the bolted connections are suitable for securely terminating aluminium or copper conductors.
With a main-circuit rated current of 630 A, compatibility with DIN NH3 fuse links and a rated operational voltage of up to 1000 V AC, the ZLBM3-L-1P-3U-M12 is engineered for demanding three-phase applications requiring reliable isolation, high fault protection and long-term operational performance.
Key Advantages
- Heavy-duty 630 A ABB InLine II fuse switch disconnector.
- Provides switching, isolation and fuse protection in one assembly.
- Three-pole operation through a single operating handle.
- Compatible with industry-standard DIN NH3 fuse links.
- Robust M12 bolted terminals for secure conductor connections.
- Suitable for aluminium and copper conductor termination.
Key Features
- ABB InLine II series.
- Low-profile ZLBM construction.
- 630 A main-circuit rated current.
- Three-pole configuration with a single operating handle.
- Rated operational voltage up to 1000 V AC.
- Designed for DIN NH3 fuse links.
- M12 bolted terminal connections.
- 185 mm distance between phases.
Dependable High-Current Circuit Protection
A fuse switch disconnector combines manual circuit switching, visible isolation and overcurrent protection within one coordinated device. When fitted with correctly selected NH3 fuse links, the ABB ZLBM3-L-1P-3U-M12 helps protect cables, busbar systems and connected equipment against overload and short-circuit conditions.
The single-handle mechanism operates all three phases together, supporting straightforward and controlled isolation of three-phase circuits. Its M12 bolted terminals and 185 mm phase spacing make the unit particularly suitable for high-current switchboard assemblies where robust electrical connections and efficient panel integration are required.
Typical Applications
- Industrial low-voltage switchboards.
- Main and sub-distribution panels.
- Motor control centres.
- Commercial building power distribution.
- Renewable-energy and inverter protection systems.
- Utility and infrastructure installations.
- OEM switchgear and panel-building projects.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Single Phase | |
|---|---|---|
| Poles | 3-pole | |
| Device Type | Fuse switch disconnector | |
| Fuse Size | NH3 | |
| Current | 630 A | |
| Manufacturer | ABB | |
| Series | InLine II | |
| Model | ZLBM3-L-1P-3U-M12 | |
| Product code | 1SEP620173R1200 | |
| EAN | 7025840093183 | |
| Product type | Fuse switch disconnector | |
| Construction | Low-profile vertical design | |
| Rated current | 630 A | |
| Rated operational voltage | Up to 1000 V AC | |
| Rated insulation voltage (Ui) | 1000 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Rated operational current, AC-20B | 630 A at 400–690 V; 400 A at 800 V | |
| Rated operational current, AC-21B | 630 A at 400–690 V; 400 A at 800 V | |
| Rated operational current, AC-22B | 630 A at 400–690 V and 1000 V; 400 A at 800 V | |
| Rated operational current, AC-23B | 630 A at 400 V | |
| Number of poles | 3 | |
| Handle type | Single-pole operating handle | |
| Fuse size | NH3 | |
| Fuse system | DIN | |
| Terminal type | M12 bolted terminals | |
| Terminal tightening torque | 25 Nm | |
| Distance between phases | 185 mm | |
| Front protection rating | IP30 | |
| Power loss at rated load | 97.2 W | |
| Electronic fuse monitoring | No | |
| Applicable standard | IEC 60947-3 | |
| Dimensions (H × W × D) | 763 × 99 × 174 mm | |
| Net weight | Approx. 4.65 kg | |
| Country of origin | Bulgaria |
Frequently Asked Questions
What is the ABB ZLBM3-L-1P-3U-M12 used for?
It is used for switching, isolating and protecting high-current three-phase circuits in industrial and commercial low-voltage distribution systems.
What is the rated current of this fuse switch disconnector?
The ABB ZLBM3-L-1P-3U-M12 has a main-circuit rated current of 630 A.
Which fuse links are compatible with this model?
This fuse switch disconnector is designed for use with DIN NH3 fuse links. Fuse ratings must be selected to suit the circuit and application requirements.
What does the single-handle configuration mean?
The single operating handle controls the switching of all three poles together, allowing the three-phase circuit to be connected or isolated through one coordinated action.
What type of terminals does this model use?
The unit uses M12 bolted terminals with a specified tightening torque of 25 Nm, providing secure connections for appropriately prepared conductors.
Can the device operate at 1000 V AC?
Yes. The device has a rated operational voltage of up to 1000 V AC, although the applicable operational current depends on the utilisation category and system voltage.
Trusted for High-Current Power Distribution
ABB InLine II fuse switch disconnectors are specified by switchboard manufacturers, electrical engineers and infrastructure operators for dependable circuit isolation and fuse protection in demanding low-voltage distribution systems.
