Siemens NNX3B800 Molded Case Circuit Breaker
- 800A
- 3 Pole
- Bolt-On
Quantity
Siemens NNX3B800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial use, the Siemens NNX3B800 is a 3-pole, 800A molded case circuit breaker offering reliable low-voltage circuit protection. This bolt-on NG frame unit integrates into Siemens P4 and P5 panelboards, switchboards, and MCCs. For upgrades, it is replaced by the 3VA6580-5HN31-0AA0 when paired with a strap kit. The breaker features a thermal-magnetic trip unit with long-time and instantaneous functions. It is HACR rated and provides a 35kA interrupting rating at 480V.Specifications
| Brand | Siemens |
|---|---|
| Part Number | NNX3B800 |
| Series | VL |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 35kA @ 500VDC |
| Frame Type | ND |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4 Panelboards, Siemens P5 Panelboards, Siemens Switchboards, Motor Control Centers |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
5 answersWhat is the recommended replacement for the discontinued NNX3B800?
The Siemens NNX3B800 is a discontinued VL-series breaker. For upgrades or replacements, Siemens recommends the 3VA6580-5HN31-0AA0 molded case circuit breaker. You will also need the appropriate strap kit to retrofit the new 3VA breaker into existing P4 or P5 panelboards.
Are terminal lugs included with the NNX3B800?
No, terminal lugs are not included with this circuit breaker. Lugs must be purchased separately based on your specific conductor size and material requirements.
Can the NNX3B800 be used in reverse-feed applications?
Yes, this breaker is rated for reverse-feed applications, allowing line and load connections to be wired in either direction without compromising protection.
Is the NNX3B800 HACR rated?
Yes, this circuit breaker is HACR rated, meaning it is approved for use in heating, air conditioning, and refrigeration applications.
Can I swap the trip unit on the NNX3B800 for a different rating?
No, the NNX3B800 comes with a non-interchangeable thermal-magnetic trip unit. While the magnetic (instantaneous) trip is adjustable, the thermal (long-time) setting is fixed at 800 amps and the unit itself cannot be swapped.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.