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1SAM340000R1008 — Power circuit-breaker for trafo/generator/installation protection
Electrical & controlsPart number: 1SAM340000R1008
ABB 1SAM340000R1008 is the MS132-4.0T circuit breaker for primary-side control transformer protection. It provides overload and short-circuit protection with a 2.5–4.0 A setting range and an 80 A fixed instantaneous short-circuit setting. The three-pole device has screw terminals and a rotary handle.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAM340000R1008 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Circuit Breaker for Transformer Protection MS132-4.0T |
| Cut-off Current Characteristic | Cut-off Current Characteristic @ 400V - Circuit Breaker for Transformer Protection MS132-T / MS132-KT |
| Product Net Width | 45 mm |
| Product Net Height | 90 mm |
| Product Net Depth / Length | 86.75 mm |
| Product Net Weight | 0.265 kg |
| Rated Service Short-Circuit Breaking Capacity (I cs ) | 100 kA at 230 V AC and 400 V AC |
| Rated Ultimate Short-Circuit Breaking Capacity (I cu ) | 100 kA at 400 V AC |
| Rated Instantaneous Short-Circuit Current Setting (I i ) | 80 A |
| Setting Range | 2.5–4.0 A |
| Rated Operational Voltage | Main circuit: 690 V AC |
| Rated Operational Current (I e ) | 4 A |
| Rated Frequency (f) | Main circuit: 50 Hz and 60 Hz |
| Operating Frequency (f sw ) | 0 ... 400 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 0.6 ... 1.5 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 |
| Mounting on DIN Rail | TH35-15 and TH35-7.5, 35 mm rail, IEC 60715 |
| Minimum Mounting Distance | Electrical Conductive Board, Vertical 75 mm |
| Short-Circuit Current Rating (SCCR) | Any UL Listed Fuses or Circuit-Breakers, Tap Conductor Protection in Group Installations (480Y / 277 V AC) 65 kA |
| Published component type | Power circuit-breaker for trafo/generator/installation protection |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
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 is ABB 1SAM340000R1008 designed to protect?
ABB identifies 1SAM340000R1008 as the MS132-4.0T, a circuit breaker designed for primary-side protection of control transformers against overload and short circuit. Confirm the transformer and installation requirements before selecting it.
What are the overload setting range and instantaneous trip setting?
The MS132-4.0T has a 2.5–4.0 A setting range and an 80 A rated instantaneous short-circuit current setting. ABB describes the short-circuit setting as fixed at 20 times rated current to accommodate transformer inrush.
What is the short-circuit breaking capacity at 400 V AC?
For this part, the rated service short-circuit breaking capacity Ics is 100 kA at 400 V AC; the rated ultimate breaking capacity Icu is also listed as 100 kA at 400 V AC. Do not assume the same rating at other voltages.
How is the MS132-4.0T mounted and connected?
The breaker has screw terminals and is listed for TH35-7.5 and TH35-15 DIN rails. Its housing is IP20, while the main-circuit terminals are IP10. Check enclosure and installation requirements for the intended panel.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.