Rated 20 A continuous at 40 °C ambient, it holds that same 20 A all the way up to 55 °C, then derates to 19 A at 60–70 °C — useful if the panel sits near a heat source or in a warm enclosure. Breaking capacity hits 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V — that's a lot of fault-clearing muscle for a 20 A frame, meaning it can handle high available fault currents downstream of a large transformer without needing a current-limiting fuse upstream.
Siemens 3VA1120-3EF36-0AH0 SENTRON MCCB, 20A, 3-Pole, 75.6kA
MPN3VA1120-3EF36-0AH0
Siemens SENTRON 3VA1120-3EF36-0AH0, Molded case circuit breaker, Line protection, 3-pole, 20 A (at 40 °C), breaking capacity 75.6 kA at 240 V, TM240 release, with auxiliary switches.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Basic switch (supplied) ref. | 3VA11203EF360AA0 |
| Integrated auxiliary / alarm switch ref. | 3VA9988-0AB12 |
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Rated operational voltage Ue (AC) | 690 V |
| Rated insulation voltage Ui | 800 V |
| Current at 40 °C | 20 A |
| Current at 45 °C | 20 A |
| Current at 50 °C | 20 A |
| Current at 55 °C | 20 A |
| Current at 60 °C | 19 A |
| Current at 65 °C | 19 A |
| Current at 70 °C | 19 A |
| Switching capacity class | N |
| Breaking capacity at 240 V | 75.6 kA |
| Breaking capacity at 415 V | 52.5 kA |
| Breaking capacity at 440 V | 32 kA |
| Breaking capacity at 500 V | 11.9 kA |
| Breaking capacity at 690 V | 11.9 kA |
| Power loss, max. | 12 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM240 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Grounding protection function | No |
| Parameter | Value |
|---|---|
| Main circuit connection type | box terminal on both sides |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | No |
| Trip indicator | Yes |
| Communication function | No |
| Measurement function | No |
| Motor drive option | Yes |
| Auxiliary CO contacts | 3 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Mechanical service life (operating cycles), typ. | 20 000 |
| Height | 130 mm |
| Width | 76.2 mm |
| Depth | 70 mm |
| Height (in) | 5.12 in |
| Width (in) | 3 in |
| Depth (in) | 2.76 in |
Product details
Frequently asked questions
What is 3VA1120-3EF36-0AH0's listed depth?
The depth is 70 mm (2.76 in), which is standard for this frame size and fits most SENTRON panelboards without clearance issues.
What is 3VA1120-3EF36-0AH0's listed width?
The width is 76.2 mm (3 in), matching the typical 3-pole MCCB footprint for this current rating.
MPN
3VA1120-3EF36-0AH0