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MERSEN FUSE BASE NH 3-PP C/MICRO 1P BB31PPMS
Mersen BB31PPMS single-pole NH3 plastic fuse base with integrated microswitch, rated at 630 A, 1250 V AC and 1000 V DC for industrial circuit-protection systems.
£76.01
Why Choose the Mersen BB31PPMS NH3 Fuse Base?
The Mersen BB31PPMS is a robust single-pole NH3 fuse base with an integrated microswitch, designed for dependable fuse mounting and circuit protection in high-current industrial electrical systems. Also identified by the Mersen item number H218760, this fuse base supports NH size 3 fuse-links and provides rated operation at up to 1250 V AC, 1000 V DC and 630 A.
Part of the Mersen NH plastic fuse-base range, the BB31PPMS combines a durable moulded base with stable silver-plated electrolytic copper contact springs. Separate captive steel springs maintain reliable contact pressure, helping the assembly withstand the thermal and electrical stresses encountered in switchboards, distribution equipment and industrial control panels.
The integrated microswitch enables fuse-status monitoring when the base is used with a compatible NH fuse-link incorporating a striker. The microswitch can operate when the fuse-link melts or when no fuse-link is installed, allowing the condition to be communicated to an alarm, PLC or supervisory control system.
Key Advantages
- Heavy-duty NH3 fuse base rated at 630 A.
- Suitable for systems operating at up to 1250 V AC or 1000 V DC.
- Integrated microswitch for fuse-status indication.
- Compatible with NH fuse-links equipped with a striker mechanism.
- Flexible installation by screw mounting or DIN rail mounting.
- Silver-plated copper contacts provide reliable electrical conductivity.
- Single-pole modular design allows multiple bases to be mounted in parallel.
Key Features
- Mersen NH plastic fuse-base series.
- NH size 3 fuse-link compatibility.
- Single-pole configuration.
- 630 A rated current.
- 1250 V AC IEC rated voltage.
- 1000 V DC IEC rated voltage.
- Integrated microswitch rated at up to 250 V AC, 10 A.
- Screw-terminal electrical connections.
- Screw mounting or DIN rail mounting options.
- RoHS-compliant construction.
Reliable NH Fuse Protection and Status Monitoring
NH fuse systems are widely used to protect high-current electrical circuits against overloads and short circuits. The Mersen BB31PPMS securely supports an NH3 fuse-link while providing the contact pressure and conductivity required for reliable operation in industrial power-distribution applications.
When fitted with a compatible striker-operated fuse-link, the integrated microswitch provides a remote indication of fuse operation or absence. This functionality supports faster fault identification and can reduce maintenance time by allowing fuse status to be monitored from a control panel, PLC or building-management system.
Typical Applications
- Industrial low-voltage distribution boards.
- Electrical switchboards and switchgear assemblies.
- Motor control centres and machinery panels.
- High-current feeder and branch-circuit protection.
- Renewable-energy and DC distribution systems.
- Automation systems requiring remote fuse-status monitoring.
- Power-distribution equipment and OEM panel building.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Current | 630 A | |
| Voltage | 1250 V | |
| Manufacturer | Mersen | |
| Series | NH Plastic Bases | |
| Catalogue number | BB31PPMS | |
| Item number | H218760 | |
| Product type | NH fuse base with microswitch | |
| Fuse size | NH3 | |
| Number of poles | 1 | |
| Rated current | 630 A | |
| Rated voltage AC | 1250 V AC IEC | |
| Rated voltage DC | 1000 V DC IEC | |
| Current type | AC / DC | |
| Microswitch rating | 250 V AC, 10 A | |
| Microswitch terminal size | 6.3 × 0.8 mm | |
| Connection type | Screw connection | |
| Mounting type | Screw mounting or DIN rail mounting | |
| Contact material | Silver-plated electrolytic copper | |
| Rated short-circuit current | Up to 117 kA for NH sizes 00 to 3 | |
| Compliance | IEC 60269, DIN 43620 and DIN VDE 0636 | |
| RoHS compliant | Yes | |
| EAN / UPC | 8430399003085 | |
| Approximate weight | 0.68 kg | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen BB31PPMS used for?
The Mersen BB31PPMS is used to mount an NH size 3 fuse-link for overload and short-circuit protection in high-current industrial AC and DC electrical systems.
What is the current rating of the BB31PPMS?
The fuse base has a rated current of 630 A.
What voltage can this fuse base support?
The BB31PPMS is rated for operation at up to 1250 V AC and 1000 V DC under applicable IEC ratings.
What does the integrated microswitch do?
The microswitch provides fuse-status indication when used with a compatible NH fuse-link incorporating a striker. It can signal when the fuse has operated or when the fuse-link is absent.
How is the Mersen BB31PPMS installed?
The single-pole fuse base can be installed using screw mounting or a suitable DIN rail arrangement and uses screw connections for the main electrical conductors.
Trusted for Industrial Circuit Protection
Mersen NH fuse bases are used by panel builders, electrical engineers and industrial equipment manufacturers to provide dependable high-current fuse mounting, reliable electrical contact and effective circuit-protection monitoring.
