The 125 A continuous rating (Iu) means this disconnect will carry full motor or resistive load current without derating up to 40 °C ambient — above that, you'll need to consult the thermal derating curve in the 3VA manual. It ships with front terminals for busbar connection, so it lands directly on a busbar stack in the panel — no lug kits needed. The 70 mm depth and 101.6 mm width fit the standard SENTRON 4-pole footprint, so it swaps into an existing 3VA cutout without re-drilling the mounting plate.
Siemens 3VA1112-1AA42-0JH0 SENTRON Switch Disconnector, 125
MPN3VA1112-1AA42-0JH0
Siemens SENTRON 3VA1112-1AA42-0JH0, switch disconnector IEC frame 160, 4-pole SD100, In=125 A, without overload or short-circuit protection, shunt trip 110-127 V DC/AC, 2 auxiliary switches HQ + 1 trip alarm switch HQ.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Switch disconnector |
| Brand / range | SENTRON |
| Product version | in MCCB design |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Power loss, max. | 38 W |
| Parameter | Value |
|---|---|
| Main circuit connection type | busbar connection |
| Main circuit connector arrangement | Front terminal |
| Protection class (IP), front | IP40 |
| Parameter | Value |
|---|---|
| Undervoltage release | No |
| Voltage trigger | Yes |
| Trip indicator | Yes |
| Communication 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 |
|---|---|
| Height | 130 mm |
| Width | 101.6 mm |
| Depth | 70 mm |
Product details
Frequently asked questions
What is the difference between 3VA1112-1AA42-0JH0 and 3VA1110-5EE32-0JA0?
The 3VA1110-5EE32-0JA0 is a 3-pole molded-case circuit breaker with thermal-magnetic overcurrent protection (TM220) rated at 100 A, while the 3VA1112-1AA42-0JH0 is a 4-pole switch disconnector with no overcurrent protection, rated at 125 A. They share the same frame 160 mechanical platform and 70 mm depth, but the breaker includes a full protective release and the disconnect does not — they are not functional substitutes.
MPN
3VA1112-1AA42-0JH0