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1SAM340000R1014 — Power circuit-breaker for trafo/generator/installation protection
Electrical & controlsPart number: 1SAM340000R1014
ABB MS132-25T (1SAM340000R1014) is a three-pole circuit breaker designed for primary-side protection of control transformers. It provides overload and short-circuit protection, a 20–25 A adjustable overload setting, screw terminals and a lockable rotary handle with ON/OFF/TRIP indication.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAM340000R1014 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Circuit Breaker for Transformer Protection MS132-25T |
| 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 | 97.8 mm |
| Product Net Depth / Length | 86.05 mm |
| Product Net Weight | 0.31 kg |
| Rated Service Short-Circuit Breaking Capacity (I cs ) | 50 kA at 400 V AC |
| Rated Ultimate Short-Circuit Breaking Capacity (I cu ) | 50 kA at 400 V AC |
| Rated Instantaneous Short-Circuit Current Setting (I i ) | 500 A |
| Setting Range | 20–25 A |
| Rated Operational Voltage | Main circuit: 690 V AC |
| Rated Operational Current (I e ) | 25 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 1.2 ... 1.9 W |
| Number of Poles | 3 |
| Conventional Free-air Thermal Current (I th ) | Main Circuit 25 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 ... 6 mm² |
| Tightening Torque | Main Circuit 2 N·m |
| Wire Stripping Length | Main Circuit 10 mm |
| Mounting Position | 1 ... 6 |
| Mounting on DIN Rail | TH35-15 or TH35-7.5, 35 mm 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) 30 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 |
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 1SAM340000R1014 designed to protect?
This is the MS132-25T circuit breaker, designed for primary-side protection of control transformers against overload and short circuits. The breaker also provides a manual disconnect function.
What are the overload and short-circuit settings of the MS132-25T?
The overload setting is adjustable from 20 to 25 A. The instantaneous short-circuit setting is fixed at 500 A to accommodate transformer inrush; it is not an adjustable 20–25 A setting.
What is the breaking capacity of the MS132-25T at 400 V AC?
ABB lists both service breaking capacity Ics and ultimate breaking capacity Icu as 50 kA at 400 V AC. Breaking capacity varies with voltage; suitability also depends on the installation’s prospective fault current and protection coordination.
How can I check whether the MS132-25T suits my transformer?
Check that the transformer’s rated primary current is within the 20–25 A setting range and confirm voltage, inrush and fault-current requirements. Provide the equipment model and serial number, transformer nameplate and existing breaker reference for verification; fitment is not established by part number alone.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.