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1SAM340000R1003 — Power circuit-breaker for trafo/generator/installation protection
Electrical & controlsPart number: 1SAM340000R1003
ABB 1SAM340000R1003 (MS132-0.4T) is a three-pole circuit breaker designed for primary-side protection of control transformers against overload and short circuit. It has a 0.25–0.40 A adjustable current range, screw terminals and a lockable rotary handle. Its rated service breaking capacity is 100 kA at 400 V AC. Confirm suitability for the transformer and installation before selection.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAM340000R1003 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Circuit Breaker for Transformer Protection MS132-0.4T |
| 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 | 0.215 kg |
| Rated Service Short-Circuit Breaking Capacity (I cs ) | 100 kA at 230 V AC; 100 kA at 400 V AC |
| Rated Ultimate Short-Circuit Breaking Capacity (I cu ) | (400 V AC) 100 kA |
| Rated Instantaneous Short-Circuit Current Setting (I i ) | 8 A |
| Setting Range | 0.25 ... 0.40 A |
| Rated Operational Voltage | Main Circuit 690 V AC |
| Rated Operational Current (I e ) | 0.4 A |
| Rated Frequency (f) | Main circuit 50/60 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 | 3P |
| Conventional Free-air Thermal Current (I th ) | Main Circuit 0.4 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 mounting rail according to 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 |
| Trip Class | 10 |
| Actuator Type | Lockable rotary handle, ON / OFF / TRIP indication |
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 1SAM340000R1003 designed to protect?
It is the MS132-0.4T, a circuit breaker designed for primary-side protection of control transformers against overload and short circuit. Confirm the transformer and circuit requirements before selection.
What current range and trip settings does the MS132-0.4T have?
The adjustable current setting range is 0.25–0.40 A and the rated operational current is 0.4 A. The instantaneous short-circuit setting is 8 A; the overload trip class is 10.
What is its short-circuit breaking capacity at 400 V AC?
The rated service breaking capacity Ics and ultimate breaking capacity Icu are both 100 kA at 400 V AC. The applicable rating and protection arrangement must be checked against the installation.
How does the MS132-0.4T mount and connect?
It has three poles, screw terminals and provision for 35 mm DIN rail mounting. The body measures 45 mm wide, 90 mm high and 86.75 mm deep. Verify panel space and wiring requirements before ordering.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.