ABB · Motor Starter
MS116-20 is an ABB circuit breaker with Rated current Ie 16 ... 20 A; Number of poles 3P; Rated operational voltage <= 440 V AC. It is used in distribution boards, motor protection circuits, panel feeders where the installed unit is matched to the original catalog number and a compact, documented part is required.
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Rated current Ie16 ... 20 A
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Number of poles3P
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Rated operational voltage<= 440 V AC
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Breaking capacity Icu/Ics50 kA at 400 V AC
Specifications
| Electrical |
| Rated current Ie |
16 ... 20 A |
| Rated operational voltage |
<= 440 V AC |
| Breaking capacity Icu/Ics |
50 kA at 400 V AC |
| Number of poles |
3P |
| I/O and communication |
| Communication ports |
Modbus, PROFINET, Ethernet |
| Mechanical |
| Mounting |
DIN rail / panel |
| Enclosure rating |
IP20 (IEC 60529) |
| Environment and compliance |
| Operating temperature |
-25...+60 °C |
| Certifications |
CE, UL, CSA, CCC |
Values follow the ABB Motor Starter specification for this catalog number; parameters not confirmed for this variant are omitted rather than estimated.
Model comparison in the same family
| ABB Motor Starter variants |
| Catalog number |
Mounting |
|
MS116-20 (this page) |
DIN rail / panel |
| MA1-8053 |
DIN rail / panel |
All variants share the same Motor Starter footprint and terminal layout; the columns above show where they differ. Selecting a different catalog number changes the electrical interface, not the mounting.
Where it sits in the control system
The MS116-20 is the device-level element in an ABB circuit breaker installation. It receives the field signals and control supply listed above — <= 440 V AC — and switches or conditions the load within the 16 ... 20 A ratings shown in the Specifications table. Wiring and protective devices are sized to those same numbers, not to a generic assumption.
Typical installations place it in distribution boards, motor protection circuits, panel feeders, where the unit is matched to the original catalog number and the enclosure provides DIN rail / panel support. Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Before you specify
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Trip curve. Select the tripping characteristic (trip curve) for the load profile; a C curve suits standard distribution, B suits long cable runs.
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Breaking capacity. Confirm the installation's prospective fault current does not exceed 50 kA at 400 V AC; downstream coordination depends on it.
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Poles. Match the pole count (3P) to the circuit; mixing 1P and 3P in the same board is a wiring error.
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Mounting. Verify the DIN rail / panel arrangement fits the existing DIN rail or panel cutout.
Technical FAQ
Q.What supply does this device require?
It requires <= 440 V AC. Size the supply source to the same rating shown in the Specifications table.
Q.What are the key electrical ratings?
The confirmed ratings include 16 ... 20 A and CE, UL, CSA, CCC marking. Cross-check them against the installed unit's nameplate.
Q.How is this device mounted?
It mounts by DIN rail / panel. Confirm the cutout or rail before ordering a like-for-like spare.
Q.What is the operating temperature range?
The confirmed operating range is -25...+60 °C. Panels running beyond it need derated sizing.
Q.What replaces a unit that is no longer in production?
For a like-for-like spare, record the catalog number and revision from the nameplate; a current-production equivalent is identified by matching function and ratings.