Siemens 3VM1020-4ED42-0AA0 SENTRON MCCB, 4-Pole, 20A, 121kA
Siemens SENTRON series, Molded case circuit breaker, 3VM1020-4ED42-0AA0, 4-pole, 20 A rated current, TM210 thermal-magnetic release, breaking capacity 121 kA at 240 V AC.
Specifications
| Parameter | Value |
|---|---|
| Product designation | Molded case circuit breaker |
| Brand / range | SENTRON |
| Product version | Line protection |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| 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 | 18 A |
| Switching capacity class | S |
| Breaking capacity at 240 V | 121 kA |
| Breaking capacity at 415 V | 76 kA |
| Breaking capacity at 440 V | 40 kA |
| Breaking capacity at 500 V | 12 kA |
| Power loss, max. | 12 W |
| Parameter | Value |
|---|---|
| Overcurrent release (trip unit) type | TM210 |
| Overcurrent protection function | LI |
| Ground-fault monitoring | Without |
| Parameter | Value |
|---|---|
| Main circuit connector arrangement | Front connection |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Communication function | No |
| Measurement function | No |
| Motor drive option | No |
| Auxiliary CO contacts | 0 |
| Parameter | Value |
|---|---|
| Operating temperature, max. | 70 °C |
| Operating temperature, min. | -25 °C |
| Storage temperature, max. | 80 °C |
| Storage temperature, min. | -40 °C |
| Parameter | Value |
|---|---|
| Height | 130 mm |
| Width | 101.6 mm |
| Depth | 70 mm |
| Height (in) | 5.1 in |
| Width (in) | 4 in |
| Depth (in) | 2.8 in |
Product details
Siemens SENTRON 3VM1020-4ED42-0AA0 — 4-Pole MCCB with TM210 Release
Its interrupting capacity is rated at 121 kA at 240 V AC, 76 kA at 415 V, 40 kA at 440 V, and 12 kA at 500 V — figures that define the maximum fault current it can safely clear at each voltage level without upstream coordination failure. The breaker holds its full 20 A rating from 40 °C through 55 °C ambient, then derates to 19 A at 60–65 °C and 18 A at 70 °C, so panel internal temperature rise matters for continuous loading.
The 3VM1020-4ED42-0AA0 carries a current production lifecycle status — it remains in active manufacture as of the latest Siemens lifecycle records, with no announced end-of-life or last-time-buy window.
Physical Fit & Panel Integration
The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep — a 4-inch wide footprint that occupies four standard DIN-rail module spaces in a distribution panel or enclosure. Maximum power dissipation is 12 W at rated load, which should be factored into enclosure thermal calculations to avoid exceeding the 70 °C maximum operating ambient.
The TM210 release designates a fixed thermal-magnetic trip unit with an adjustable long-time pickup (Ir) up to 320 A maximum — though the breaker frame is rated 20 A continuous, the release element itself can be set lower for downstream coordination. No ground-fault monitoring, no neutral protection, and no communication function are built in — this is a straightforward line-protection MCCB for basic overcurrent and short-circuit duty, not a smart breaker with metering or remote trip.