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1SAM250000R1008 — Motor protection circuit-breaker
Electrical & controlsPart number: 1SAM250000R1008
ABB 1SAM250000R1008 is the MS116-4.0 three-pole manual motor starter and motor protection circuit-breaker. It has an adjustable 2.5–4.0 A overload setting, trip class 10A, screw terminals and a rotary ON/OFF handle. Designed for manual motor switching, it provides overload, short-circuit and phase-failure protection. Its rated service short-circuit breaking capacity is 50 kA at 400 V AC. Confirm motor and circuit requirements before selection.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAM250000R1008 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Manual Motor Starter MS116-4.0 |
| Cut-off Current Characteristic | Cut-off Current Characteristic @ 400V -Manual Motor Starter MS116 |
| Product Net Width | 45 mm |
| Product Net Height | 90 mm |
| Product Net Depth / Length | 85.6 mm |
| Product Net Weight | 0.265 kg |
| Rated Service Short-Circuit Breaking Capacity (I cs ) | 230 V AC: 50 kA; 400 V AC: 50 kA; 440 V AC: 6 kA; 500 V AC: 6 kA; 690 V AC: 2 kA |
| Rated Ultimate Short-Circuit Breaking Capacity (I cu ) | 230 V AC: 75 kA; 400 V AC: 75 kA; 440 V AC: 18 kA; 500 V AC: 15 kA; 690 V AC: 3 kA |
| Rated Instantaneous Short-Circuit Current Setting (I i ) | 50 A |
| Setting Range | 2.5–4.0 A |
| Rated Operational Power AC-3 (P e ) | 400 V, three-phase: 1.5 kW |
| Rated Operational Power AC-3e (P e ) | (400 V) Three Phase 1.5 kW |
| Rated Operational Voltage | Main circuit 690 V AC |
| Rated Operational Current (I e ) | 4 A |
| Rated Operational Current AC-3 (I e ) | 4 A |
| Rated Operational Current AC-3e (I e ) | 4 A |
| Rated Frequency (f) | Main circuit 50/60 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Main Circuit 6 kV |
| Rated Insulation Voltage (U i ) | 690 V |
| Power Loss | at Rated Operating Conditions per Pole 0.7 ... 1.8 W |
| Number of Poles | 3 |
| Conventional Free-air Thermal Current (I th ) | Main Circuit 4 A |
| Degree of Protection | Housing IP20; main circuit terminals IP10 |
| Terminal Type | Screw Terminals |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Tightening Torque | Main Circuit 0.8 ... 1.2 N·m |
| Wire Stripping Length | Main Circuit 9 mm |
| Mounting Position | 1 ... 6 |
| Published component type | Motor protection circuit-breaker |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Extended product type | MS116-4.0 |
| Trip class | 10A |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What current range does the ABB MS116-4.0 cover?
The adjustable overload setting range is 2.5–4.0 A, with a rated operational current of 4 A. Check the motor nameplate current and the complete circuit requirements before selection.
What is its short-circuit breaking capacity at 400 V AC?
At 400 V AC, the rated service breaking capacity Ics is 50 kA and the ultimate breaking capacity Icu is 75 kA. Ratings change with voltage; confirm the prospective fault current and protection coordination for the installation.
Can this motor protector be used with single-phase and three-phase motors?
ABB describes the three-pole MS116-4.0 as suitable for both single-phase and three-phase applications. Suitability depends on the motor current, wiring and circuit requirements; confirm the equipment details and serial number where applicable before ordering.
What motor power is the MS116-4.0 rated for at 400 V?
The rated operational power is 1.5 kW for three-phase AC-3 duty at 400 V. This is not a universal motor fitment guarantee: check the motor current, voltage, duty and installation requirements.
Does the MS116-4.0 provide overload and phase-failure protection?
Yes. It provides overload and short-circuit protection and phase-failure sensitivity, with trip class 10A. It also has a rotary handle with ON/OFF indication and a disconnect function.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.