Jean Müller
Jean Müller NH1 Fuse Link M1GL250 250A gG 500V for KETO-1 Switch-Disconnector
Jean Müller NH1 Fuse Link M1GL250 250A gG 500V for KETO-1 Switch-Disconnector
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€8.07
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€8.07
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- Italy22% €9.84
- Germany19% €9.60
- France20% €9.68
- Austria20% €9.68
- Belgium21% €9.76
- Bulgaria20% €9.68
- Croatia25% €10.08
- Cyprus19% €9.60
- Czech Republic21% €9.76
- Denmark25% €10.08
- Estonia24% €10.00
- Finland25.5% €10.12
- Greece24% €10.00
- Hungary27% €10.24
- Ireland23% €9.92
- Latvia21% €9.76
- Lithuania21% €9.76
- Luxembourg17% €9.44
- Malta18% €9.52
- Netherlands21% €9.76
- Poland23% €9.92
- Portugal23% €9.92
- Romania21% €9.76
- Slovakia23% €9.92
- Slovenia22% €9.84
- Spain21% €9.76
- Sweden25% €10.08
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20 units at this price
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Delivery in 10-20 daysJean Müller
Jean Müller NH1 Fuse Link M1GL250 250A gG 500V for KETO-1 Switch-Disconnector
This is the NH blade-contact fuse link that goes inside the Jean Müller KETO-1 switch-disconnector to protect the DC run between the battery bank and the inverter. It is the part that actually acts: on a short circuit or a sustained overload it melts and opens the circuit, keeping cables, batteries and inverter out of trouble.
Size is NH1 and rated current 250A, with a gG operating class — the general-purpose curve that rides out the normal inrush of a storage system and clears real faults. Jean Müller rates it at AC 500V with a 120kA breaking capacity, 21,6W power dissipation at rated current and a combi indicator, so you can see at a glance which link has gone.
One point that matters when sizing a DC circuit: Jean Müller declares no rated DC voltage for gG fuse links. The catalogue rates them for AC only and, for DC applications, lists a separate family of special-purpose types rated from DC80V to DC440V. The DC figures given below, 250V DC per pole and up to 440V DC with the poles in series, are limits of the KETO 1 switch and not a rated voltage of the link itself: suitability for DC has to be assessed on the holder-plus-link assembly, or by choosing a link that is declared for DC.
The KETO-1 switch takes two links, one on the positive pole and one on the negative, so a complete install needs a pair. Size them on the battery’s maximum charge and discharge current with a safety margin, not on the inverter’s rated current. Fitting is a job for a qualified electrician, to local wiring rules.
Key strengths
NH1 size, 250ABlade-contact link for the Jean Müller KETO-1 switch.
gG classGeneral purpose: rides out inrush, clears faults.
120kA breaking capacityFigure declared by Jean Müller for this range.
Combi indicatorTells you from the front which link has blown.
Two neededOne on the positive pole and one on the negative.
Technical specifications
| Feature | Value |
|---|---|
| Product code | N1015605-250A |
| Jean Müller article no. | N1015605 |
| Catalogue designation | M1GL250 |
| Manufacturer | Jean Müller |
| Type | NH blade-contact fuse link |
| NH size | NH1 |
| Rated current | 250A |
| Operating class | gG (general purpose, formerly gL) |
| Rated voltage | AC 500V (Jean Müller data) |
| Rated DC voltage of the link | Not declared: Jean Müller rates gG links for AC only and lists dedicated special-purpose types, from DC80V to DC440V, for DC applications |
| DC voltage | 250V DC per pole, up to 440V DC with the poles in series (Jean Müller data) |
| Breaking capacity | 120kA (Jean Müller data) |
| Power dissipation at rated current | 21,6W (Jean Müller data) |
| Blown-fuse indicator | combi indicator, visible from the front |
| Matching fuse holder | Jean Müller KETO-1 switch-disconnector |
| Standards | IEC/EN 60269-1, DIN VDE 0636-2 |
| Weight | 0,42kg |
| Source of the technical data | Figures declared by Jean Müller, NH fuse-link catalogue |