Catalogue reference. Availability, exact specification and OEM or aftermarket supply are confirmed in your quotation.
1SAM451000R1012 — MS165-20 Motor circuit breaker 14-20A MS16520
Electrical & controlsPart number: 1SAM451000R1012
ABB MS165-20 (1SAM451000R1012) is a three-pole manual motor starter and motor protection circuit breaker with an adjustable 14–20 A overload setting. It provides thermal overload and electromagnetic short-circuit protection, phase-loss sensitivity and a disconnect function. Rated operational power is 7.5 kW at 400 V AC, three-phase, AC-3. It has screw terminals and a rotary handle with switch-position indication.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAM451000R1012 |
| Category | Electrical & controls |
| Published component description | MS165-20 Motor circuit breaker 14-20A MS16520 |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Overload current setting range | 14–20 A |
| Rated operational current AC-3 | 20 A |
| Rated operational power AC-3 | 7.5 kW at 400 V AC, three-phase |
| Rated operational voltage | 690 V AC; 250 V DC (three poles in series) |
| Rated service short-circuit breaking capacity Ics | 100 kA at 400 V AC |
| Instantaneous short-circuit current setting | 300 A |
| Number of poles | 3 |
| Trip class | 10 |
| Terminal type | Screw terminals |
| DIN rail mounting | TH35-7.5 or TH35-15 |
| Dimensions (W × H × D) | 55 × 142.65 × 122.1 mm |
| Net weight | 0.95 kg |
| Degree of protection | IP20 housing; IP10 main circuit terminals |
Catalogue information may contain errors or be out of date.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 motor current range does the ABB MS165-20 cover?
The overload setting range is 14–20 A, and the rated operational current is 20 A. Check the motor nameplate current against the setting range and verify the complete application before selecting the breaker.
What is the MS165-20 motor power rating at 400 V?
The rated operational power is 7.5 kW at 400 V, three-phase, utilization category AC-3. The motor current and installation requirements must also be checked; the MS165 series maximum of 45 kW is not the rating for this model.
What protection and switching functions does the MS165-20 provide?
It combines thermal overload and electromagnetic short-circuit protection, with phase-loss sensitivity and trip class 10. It also has a disconnect function and a rotary handle with switch-position and short-circuit trip indication.
What is the short-circuit breaking capacity of the MS165-20 at 400 V AC?
The rated service short-circuit breaking capacity Ics is 100 kA at 400 V AC. The applicable capacity depends on voltage and installation conditions, so confirm the prospective fault level and relevant rating before selection.
What are the dimensions and mounting options for the MS165-20?
The unit measures 55 mm wide by 142.65 mm high by 122.1 mm deep. It can be mounted on TH35-7.5 or TH35-15 DIN rail and has screw terminals.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.