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ABB MS116-4.0 Technical Datasheet (Manual Motor Starter / Motor Protection Circuit Breaker)
Key Overview: 3-pole, rated current 4.0A (adjustable 2.5~4.0A), Class 10A tripping, 50kA/400V breaking capacity, suitable for 1.5kW/400V AC-3 motors, 45mm DIN-rail mounting, IP20 protection, global order number 1SAM250000R1008.
- Model Explanation
| Model Part | Description |
| MS116 | ABB MS116 series compact 3-pole manual motor starter, integrated thermal-magnetic protection (overload + short-circuit + phase failure), fuse-free design |
| 4 | Rated operational current Ie = 4.0A, adjustable range 2.5~4.0A |
| 1SAM250000R1008 | Global order code |
| Dimensions / Mounting | Width 45mm, standard 35mm DIN rail mounting, IP20 degree of protection |
- Core Electrical & Mechanical Data
2.1 Basic & Protection Parameters
| Parameter | Value | Description |
| Number of poles | 3-pole | For three-phase motor protection |
| Rated current Ie | 4.0A | Adjustable range 2.5~4.0A |
| Tripping class | Class 10A | Typical motor tripping characteristic; trips in approx. 10 s at 10 overload current |
| Short-circuit protection | 50A (fixed) | Instantaneous magnetic trip, no extra fuse required |
| Breaking capacity Ics | 50kA (400V AC) | Rated service short-circuit breaking capacity |
| Rated voltage | 690V AC, 50/60Hz | Suitable for various voltage systems |
| Applicable power (AC-3) | 1.5kW (400V) / 2 hp (480V) | For standard motor duty |
| Protection functions | Temperature compensation, fuse-free protection, free tripping mechanism, isolation function, phase failure protection | Comprehensive motor protection, IEC compliant |
2.2 Mechanical & Mounting Data
Parameter Value Width 45mm Height 90mm Depth 85.6mm Weight 0.225kg Mounting Standard 35mm DIN rail (TH35-15/TH35-7.5) Connection Screw terminals, main circuit torque 0.8~1.2Nm Operation Rotary handle (clear ON/OFF indication), free tripping mechanism Degree of protection IP20 (front) Power consumption 5.4W Ambient temperature -25C≈+55C Selection Guide
3.1 Typical Applications
Direct starting and protection of small three-phase motors (1.5kW/400V)
Control of pumps, fans, compressors and industrial automation equipment
Replacement of traditional “fuse + contactor” combinations to save space and cost
Applications requiring manual control and reliable motor protection
3.2 Selection Steps
- Verify motor rated current: within 2.5~4.0A adjustable range
- Check motor power: ≤ 1.5kW (400V AC-3)
- Confirm system voltage: ≤ 690V AC, 50/60Hz
- Evaluate short-circuit current: system short-circuit current ≤ 50kA (400V)
- Installation space: reserve 45mm DIN rail width
- Ambient conditions: temperature -25°C ~ +55°C, no excessive vibration or corrosive gas
3.3 Setting & Operation Notes
Overload protection: set to 1.0~1.1 × motor rated current (within 2.5~4.0A)
Ensure reliable phase failure protection for all three-phase motor applications
Use isolation function: safe electrical isolation after shutdown for maintenance
Can be used with contactors for remote control and automatic protection
- Cross-Brand Replacement Models
| Brand | Model | Main Parameters | Differences |
| Schneider | GV2ME08 | 3-pole, 2.5~4.0A, Class 10, 50kA/400V | Same width (45mm), functionally compatible, direct replacement |
| Siemens | 3RV2011-0JA10 | 3-pole, 2.5~4.0A, Class 10, 50kA/400V | Matching mounting dimensions, compatible protection characteristics |
| Eaton | PKZM0-4 | 3-pole, 2.5~4.0A, Class 10, 50kA/400V | Functionally and dimensionally compatible, cost-effective |
| ABB Upgrade | MS132-4.0 | 3-pole, 2.5~4.0A, Class 10, 100kA/400V | Higher breaking capacity, backward compatible mounting |
- Application Notes
- Thermal-magnetic characteristics: Class 10A is intended for standard squirrel-cage motors; not recommended for special loads (e.g., transformers, capacitors)
- Phase failure protection: Trips within 2~5 seconds if any phase is lost, effectively preventing motor burnout
- Fuse-free design: Eliminates external fuses, reduces cost and maintenance; ensure line short-circuit current ≤ 50kA
- Free tripping mechanism: Forces tripping under overload/short-circuit even in ON position, ensuring safety
- Temperature compensation: Protection characteristics stable over ambient temperature range -25°C ~ +55°C
