| Key ^ | Value |
|---|---|
| Actuator Type | Lever, Toggle |
| Alarm Switch, Auxiliary Switch, Neutral Pole, Shunt Trip | Optional |
| Approval Agency | CE, cUL, UL508 |
| Approvals | UL 508, UL |
| Base Product Number | MA20 |
| Brand, Manufacturer | Altech |
| Breaker Type, Overload, Type | Thermal |
| Breaking Capacity | 20 kA |
| Busbar, Undervoltage Release | No |
| Category | Circuit Protection |
| CSA Standard | 22.2 |
| Current Rating | 20 A |
| Current Rating (Amps) | 20A |
| Dimensions | 70.1 L x 52.5 W x 89.5 D mm |
| Family Series | Altech Circuit Breakers, MA Series |
| Gross Weight | 1.2 lbs |
| Illumination | None |
| Illumination Voltage (Nominal) | - |
| Item Number, Manufacturer Part Number | MA20UM |
| Max Voltage | 277-480 VAC |
| Mfr | Altech Corporation |
| Mounting Type | DIN Rail Mount |
| Mounting, Mounting Type | DIN Rail |
| Net Weight | 1.035 lbs |
| Number of Poles | 3, 3P |
| Package | Bulk |
| Phase | 3 Phase |
| Product Series, Series | MA |
| Product Status | Active |
| Series | MA Series |
| Standards | UL508 Listed |
| Terminal Type, Termination | Screw |
| Trip Time | Adjustable Trip |
| UL Standard | 508 |
| Voltage Rating | 480 ; 480 ; 277 V |
| Voltage Rating - AC | 480 V |
| Img | Seller | Supplier SKU | Requested Price ^ | Calc MOQ Price | MOQ | In Stock | Lead Time | Brand | Weight | Preferred Tier |
|---|---|---|---|---|---|---|---|---|---|---|
| Hawk Electronics | MA20UM | 107.7 | 107.7 | 1 | In Stock | Altech | 107.7 @ Qty: 1+ | |||
| RS Delivers | 900-2112 | 120.732 | 120.732 | 1 | In Stock | Altech | 120.732 @ Qty: 1+ | |||
| Digi-Key | 9454492 | 128.95 | 128.95 | 1 | In Stock | 61 | Altech Corporation | 128.95 @ Qty: 1+ | ||
![]() ![]() | Galco | MA20UM-ALTH | 135.83 | 135.83 | 1 | In Stock | Altech | 1.2 | 135.83 @ Qty: 1+ | |
| us.rs-online.com | 70076418 | 149.75 | 149.75 | 1 | 1 | Altech Corp | 149.75 @ Qty: 1+ | |||
![]() ![]() | jensentools.com | 10109890 | 150.2 | 150.2 | 1 | In Stock | Altech | 150.2 @ Qty: 1+ |

