Purobot Max 3-A vs Max 3 with N50: Which Self-Cleaning Litter Box?
By PETKIT UK | Published: 2026-10-25
Category: Comparisons
Compare the PETKIT Purobot Max 3-A and Purobot Max 3 with N50 automatic litter boxes. Learn the key differences, trade-offs, and which model suits your home and budget.
Quick answer
Choose the Purobot Max 3 with N50 if you want the full hands-off luxury with the largest waste bin and quietest operation. The Purobot Max 3-A offers the same core self-cleaning technology at a lower price, making it a smart choice if you can trade the N50 bundle for savings.
Same core, different bundles
Both the Purobot Max 3-A and Purobot Max 3 with N50 are third-generation PETKIT automated litter boxes built for all breeds and ages. They share the same low, wide entry, patented 360° ShieldBase Leak-Guard, whisper-quiet 35dB operation, and proactive multi-cat health tracking. The difference lies in what comes in the box.
The Purobot Max 3 with N50 includes the N50 accessory bundle, which adds extra convenience features. The Purobot Max 3-A is the standalone unit, giving you the same cleaning performance without the extras. This means the Max 3-A costs less upfront, while the N50 version delivers a more complete out-of-box experience.
Price and value trade-off
At catalog prices, the Purobot Max 3 with N50 is listed at USD 431.99 (compared to USD 599.99), while the Purobot Max 3-A is USD 323.32 (compared to USD 461.89). The price gap is significant, but both represent savings versus their comparison prices.
If you are on a tighter budget and don't need the N50 extras, the Max 3-A gives you the same self-cleaning core for less. If you want the most complete setup from day one, the N50 bundle justifies its higher price with added value.
Trade-offs at a glance
- Waste bin capacity: Both models use a 7L side waste bin, but the N50 bundle may include additional liners or accessories that extend convenience. Check what the N50 bundle contains for your region; the bin itself is identical.
- Noise level: Both operate at whisper-quiet 35dB, so noise is not a differentiator.
- Health tracking: Both models include proactive multi-cat health tracking via the PETKIT app. Health monitoring is identical on both units.
Product facts at a glance
- Purobot Max 3 with N50: The PUROBOT MAX 3 delivers the ultimate hands-off luxury with a massive 7L side waste bin for up to 15 days of hands-free convenience. With the N50 bundle, you get the largest waste capacity, meaning fewer emptyings and more time between maintenance.
Purobot Max 3 with N50 - Purobot Max 3-A: The PUROBOT MAX 3 features a low, wide entry and patented 360° ShieldBase Leak-Guard, plus whisper-quiet 35dB operation. The Max 3-A offers the same quiet, leak-proof design and health tracking as the N50 version, just without the accessory bundle.
Purobot Max 3-A
Which one fits you?
Best for
- Owners who want the most complete out-of-box experience with extra accessories (Purobot Max 3 with N50)
- Budget-conscious buyers who want the same core cleaning technology at a lower price (Purobot Max 3-A)
Not for
- Owners who need the absolute lowest upfront cost should skip the N50 bundle
- Owners who want every possible accessory included should skip the standalone Max 3-A
