Siemens Molded Case Circuit Breaker 3VT8550-1AA03-0AA0
3VT8550-1AA03-0AA0
Siemens
Siemens Molded Case Circuit Breaker 3VT8550-1AA03-0AA0
Home > Siemens > Circuit Breakers > 3VT8550-1AA03-0AA0 Need Siemens 3VT8550-1AA03-0AA0? Molded Case Circuit Breaker , fixed, 3-pole for Low-voltage AC…
Specifications
| Brand | Siemens |
|---|---|
| Model Number | 3VT8550-1AA03-0AA0 |
| Official Product Name | Siemens 3VT8 Series Molded Case Circuit Breaker (3VT630N, 500 A) |
| Applicable System | Low-voltage AC power distribution and motor feeder circuits |
| Product Type | Molded Case Circuit Breaker (MCCB), fixed, 3-pole |
| Equivalent Standard | IEC 60947-2, GB 14048.2 |
| Product Status | In Stock |
| Number of poles | 3P |
| Rated operational voltage Ue | AC 400/690 V, 50/60 Hz |
| Rated insulation voltage Ui | 800 V |
| Rated impulse withstand voltage Uimp | 8 kV |
| Ultimate breaking capacity Icu (400 V AC) | 35 kA |
| Trip unit type | Fixed thermal-magnetic (overload trip set at 500 A) |
| Use category | A (non-selective) |
| Connection | Fixed, standard front cable terminals |
| Standard | IEC 60947-2, GB 14048.2 |
| Rated operational current In | 500 A |
Product Description
Its fixed thermal-magnetic trip unit gives long-time overload protection at the 500 A rating plus an instantaneous short-circuit trip, and it is a category A (non-selective) device. The breaker is rated for AC 400/690 V operation with 35 kA ultimate short-circuit breaking capacity at 400 V AC. It uses standard front cable terminals and complies with IEC 60947-2 and GB 14048.2. The Siemens 3VT8550-1AA03-0AA0 is a three-pole molded case circuit breaker from the 3VT8 family, rated 500 A for low-voltage distribution and motor circuits.
Basic Product Information
- Fixed thermal-magnetic trip unit, use category A (non-selective)
- Ultimate short-circuit breaking capacity Icu 35 kA at 400 V AC
- Rated insulation voltage 800 V and rated impulse withstand voltage 8 kV
- Finger-safe front cable terminals for conductors in the 70-300 mm2 range
- Complies with IEC 60947-2 and GB 14048.2
- Three-pole (3P) molded case breaker rated 500 A at AC 400/690 V
Technical Specifications
Version & Model Difference
3VT8 breakers are available with standard (N), high (H) and very high (L) breaking capacities; the 1AA03 code denotes the standard thermal-magnetic fixed version with 3 poles. The 3VT8550 frame is the 3VT630N 500 A rating within the 630 A-size 3VT8 family. Note that although some supplier listings label this item as an air circuit breaker, the 3VT8 range is a molded case (plastic case) family, so confirm the frame and trip unit when cross-referencing.
Application Scenarios
- Main and sub-main protection in low-voltage distribution boards
- Motor feeder and machine control panel protection
- Feeder protection in industrial and infrastructure power systems
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Frequently Asked Questions
What is the current rating of the 3VT8550-1AA03-0AA0?
It is rated 500 A, three-pole, within the 3VT630N frame of the 3VT8 family.
What is its short-circuit breaking capacity?
The ultimate breaking capacity Icu is 35 kA at 400 V AC.
Is the trip unit adjustable?
This version uses a fixed thermal-magnetic trip unit (category A); the overload trip is set at the 500 A rating.
Which standards does it comply with?
It complies with IEC 60947-2 and GB 14048.2.
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