Siemens 3NA3 fuses recommended for SINAMICS V20 / G120C

Siemens 3NA3 fuses recommended in Catalog D 31.1 as IEC-compliant line-side overcurrent protection for SINAMICS V20 and G120C converters.

Key features

IEC-compliant fuses of type 3NA3
Assignment per converter rating as listed in Catalog D 31.1
Overcurrent protection is mandatory for converter operation
For UL/cUL installations Class J fuses are listed as the alternative
Further details in Catalog LV 10 and SiePortal

Specifications

Brand	Siemens
Fuse type	3NA3 (IEC)
Category	Line-side overcurrent protection
SCCR with Class J fuses	V20: 65 kA; G120C: 100 kA
Source	Siemens Catalog D 31.1 · 2024/10-2025, p. 94-133

3NA3801		Rated current: 6 A \| For V20: V20 3AC 0.37-1.1 kW \| For G120C: -
3NA3803		Rated current: 10 A \| For V20: V20 1AC 0.12-0.55 kW; 3AC 1.5 kW \| For G120C: 0.55-2.2 kW
3NA3805		Rated current: 16 A \| For V20: V20 1AC 0.75 kW; 3AC 2.2-3 kW \| For G120C: 3-4 kW
3NA3807		Rated current: 20 A \| For V20: V20 1AC 1.1 kW; 3AC 4 kW \| For G120C: -
3NA3812		Rated current: 32 A \| For V20: V20 1AC 1.5 kW; 3AC 5.5 kW \| For G120C: 5.5-7.5 kW
3NA3814		Rated current: 35 A \| For V20: V20 1AC 2.2 kW \| For G120C: -
3NA3820		Rated current: 50 A \| For V20: V20 1AC 3 kW \| For G120C: -
3NA3822		Rated current: 63 A \| For V20: V20 3AC 7.5-22 kW \| For G120C: 11-18.5 kW
3NA3824		Rated current: 80 A \| For V20: V20 3AC 30 kW \| For G120C: 22 kW
3NA3830		Rated current: 100 A \| For V20: - \| For G120C: 30-37 kW
3NA3832		Rated current: 125 A \| For V20: - \| For G120C: 45 kW
3NA3836		Rated current: 160 A \| For V20: - \| For G120C: 55 kW
3NA3140		Rated current: 200 A \| For V20: - \| For G120C: 75 kW
3NA3142		Rated current: 224 A \| For V20: - \| For G120C: 90 kW
3NA3250		Rated current: 300 A \| For V20: - \| For G120C: 110 kW
3NA3252		Rated current: 315 A \| For V20: - \| For G120C: 132 kW

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Siemens 3NA3 fuses recommended for SINAMICS V20 / G120C

Brand Siemens·Accessories

Available part numbers (16)

3NA3801, 3NA3803, 3NA3805, 3NA3807, 3NA3812, 3NA3814, 3NA3820, 3NA3822, 3NA3824, 3NA3830 + 6 more — see full table ↓

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Siemens 3NA3 fuses recommended for SINAMICS V20 / G120C