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MERSEN FUSE Neutral pole for M125 switches NP125
Mersen NP125 UL508 fusible disconnect switch rated at 125 A for industrial circuit isolation and overcurrent protection using Class J fuse links.
£28.92
Why Choose the Mersen NP125 UL508 Fusible Disconnect Switch?
The Mersen NP125 is a robust UL508 fusible disconnect switch designed to provide safe circuit isolation and overcurrent protection for industrial power distribution and motor control applications. Rated at 125 A, this heavy-duty disconnect switch accommodates Class J fuses, making it ideal for OEM machinery, industrial control panels and commercial electrical installations requiring dependable protection and isolation.
Manufactured by Mersen, the NP125 combines a compact footprint with high-performance switching characteristics. Its durable construction, visible blade mechanism and padlockable handle help improve operator safety whilst providing reliable long-term performance in demanding industrial environments.
Designed for use on systems up to 600 V AC, the NP125 offers straightforward installation and dependable operation, making it a popular choice for panel builders, electrical contractors and maintenance engineers.
Key Advantages
- Heavy-duty 125 A UL508 fusible disconnect switch.
- Accepts Class J fuses for integrated overcurrent protection.
- Suitable for industrial motor isolation and power distribution.
- Visible blade design provides clear isolation status.
- Padlockable operating handle improves maintenance safety.
- Compact industrial design for control panels and switchboards.
Key Features
- Mersen UL508 fusible disconnect switch.
- 125 A rated operational current.
- 600 V AC maximum operating voltage.
- Designed for Class J fuse links.
- Visible blade switching mechanism.
- Industrial-grade enclosed construction.
- Suitable for motor disconnect applications.
- Complies with recognised UL508 industrial switching requirements.
Reliable Isolation and Overcurrent Protection
The Mersen NP125 provides a safe means of isolating electrical circuits whilst incorporating Class J fuse protection against overloads and short circuits. Its visible blade mechanism allows operators to confirm isolation before maintenance work begins, helping improve electrical safety.
Suitable for motor control centres, OEM machinery and industrial distribution equipment, the NP125 delivers dependable switching performance and long service life in demanding applications.
Typical Applications
- Industrial control panels.
- Motor control centres.
- OEM machinery.
- Power distribution equipment.
- Manufacturing facilities.
- Commercial electrical installations.
Technical Specifications
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| Mounting Type | Base / panel | |
|---|---|---|
| Device Type | Accessory | |
| Manufacturer | Mersen | |
| Model | NP125 | |
| Product type | UL508 Fusible Disconnect Switch | |
| Rated operational current | 125 A | |
| Maximum operating voltage | 600 V AC | |
| Fuse type | Class J | |
| Application | Circuit isolation and overcurrent protection | |
| Mounting | Panel installation | |
| Switch type | Fusible disconnect | |
| Suitable for | Industrial and commercial electrical systems |
Frequently Asked Questions
What is the Mersen NP125 used for?
The NP125 is a fusible disconnect switch used to safely isolate electrical circuits whilst providing integrated overcurrent protection using Class J fuse links.
What is the current rating of the NP125?
The Mersen NP125 has a rated operational current of 125 A.
What type of fuse does the NP125 accept?
The switch is designed to accept Class J fuse links for branch circuit protection.
What is the maximum operating voltage?
The NP125 is suitable for electrical systems up to 600 V AC.
Where is the NP125 typically installed?
It is commonly installed in industrial switchboards, control panels, motor control centres and OEM machinery requiring safe circuit isolation.
Trusted by Electrical Professionals Worldwide
Mersen disconnect switches are trusted by panel builders, OEM manufacturers and industrial electricians for dependable circuit isolation, integrated protection and reliable long-term performance in demanding electrical installations.
