800 Vac Class gR NH fuses

800 Vac Class gR NH fuses

Eaton's BussmannTM series 800 Vac NH size fuses are specifically designed to meet the needs of branch circuit and transformer protection in photovoltaic (PV) inverter systems. The fuses are capable of interrupting low overcurrents associated with faulted PV systems (such as reverse current or multi-array faults).


  • NH size 1, 2 and 3 are compact to save enclosure space for greater design flexibility.
  • Industry-leading low power loss provides greater efficiency and lower operating temperature.
  • Dual indication feature and optional microswitches make system monitoring easier.
  • Bolt-on version features common hole centers for standardizing busbar designs across the 63-400 amp range.
  • Bolt-on version eliminates the need for a fuse block, reducing installation time and components.
  • Compatible with Bussmann series PV NH base range (see data sheet no. 10163)

Data sheet no. 10784   

Product profile no. 10787

Catalog Number 170M7_, 170M7_-B
Dimensions See data sheets No. 10784
Volts 800 Vac
Amps - 32 to 400 A (blade version)
- 63 to 400A (bolt-on version)
IR 63 kA
Time constant 1-3mS
Class of operation gR
Agency information - UL 248-13 (file number E125085)
- IEC 60269-4 (see details in data sheet)

Related Products and Accessories

Blade Bolt-on Fuse size Amps
170M7350 - NH1 32
170M7351 - NH1 40
170M7352 - NH1 50
170M7353* 170M7353-B* NH1 63
170M7354 170M7354-B NH1 80
170M7355 170M7355-B NH1 100
170M7356* 170M7356-B* NH1 125
170M7357* 170M7357-B* NH1 160
170M7358* 170M7358-B* NH1 200
170M7397 170M7397-B NH2 160
170M7398 170M7398-B NH2 200
170M7399 170M7399-B NH2 250
170M7400* 170M7400-B* NH3 315
170M7401* 170M7401-B* NH3 355
170M7402* 170M7402-B* NH3 400