Nature's Generator 50A Automatic
#2 in 50 AFull review
An automatic 50 A switch with room for 24 circuits, aimed at battery and solar backup. Budget for breakers and an electrician.
Amazon $499.99$499.99
3.4/5
A plain 10 circuit 50 A switch for a large generator. Choose it over meter models only when price matters most.
- 10Circuits
- 12,500 WMax generator
- none (wire to a separate inlet box)Connection
- 5 yearsWarranty
Check price at Amazon$467.30
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Ten circuits for a generator up to 12,500 W
- Standard 1 in breakers, including AFCI and GFCI types
- UL 1008 listed with a five year warranty
Cons
- No wattmeters
- Needs a separate 50 A inlet box and cord
The Reliance Pro/Tran 2 family
Every Reliance Pro/Tran 2 model we rank, smallest first. Ratings compare each against its own rating.
| Model | Circuits | Rating | Price |
|---|---|---|---|
| Reliance Pro/Tran 2 306D | 6 | 3.3/5 | $303.80 |
| Reliance Pro/Tran 2 306C | 6 | 3.5/5 | $299.95 |
| Reliance Pro/Tran 2 306A | 6 | 3.5/5 | $299 |
| Reliance Pro/Tran 2 R306A Outdoor | 6 | 3.6/5 | $308.70 |
| Reliance Pro/Tran 2 306CRK | 6 | 3.5/5 | $345.71 |
| Reliance Pro/Tran 2 506C | 6 | 3.0/5 | $348.10 |
| Reliance Pro/Tran 2 310C | 10 | 4.2/5 | $429 |
| Reliance Pro/Tran 2 A310A | 10 | 4.0/5 | $518.40 |
| Reliance Pro/Tran 2 510D (this one) | 10 | 3.4/5 | $467.30 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its rating. How we rank explains each one.
Specifications
| Model number | 510D |
|---|---|
| Switching | |
| Type | Manual |
| Circuits | 10 |
| Generator connection | 50 A |
| Max generator | 12,500 W |
| Voltage | 120/240 V |
| Wattmeters | No |
| In the box | |
| Inlet | none (wire to a separate inlet box) |
| Inlet box included | No |
| Generator cord included | No |
| Build | |
| Outdoor rated | No |
| UL listed | Yes |
| Warranty | 5 years |
Alternatives in this rating
Nature's Generator 50A 12-Circuit
#3 in 50 AFull review
A complete 50 A kit with more circuits than the big names for less money. A strong value for a large generator.
Amazon $479.99$479.99
Champion 201193 50A 10-Circuit
#5 in 50 AFull review
A complete 50 A kit with a long cord for a large generator. Pricey, but nothing else needs buying.
Amazon $645$645
Compare
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