R. STAHL Load Disconnect Switches and Motor Starters
Molded Case Circuit Breaker for Motor Protection
Model: 8146/5-V27-201-115-02-21-1
Article No.: 249248
Key Features
- Conductor and system protection for Ex e and Ex d motors
- Robust enclosure made of glass fibre reinforced polyester resin
- Optional: Undervoltage release, shunt trip, ammeter, auxiliary contact
Product Line: MY R. STAHL 8146N
Hazardous Area Classification: Suitable for Ex e and Ex d motors and associated conductors and systems.
The standard versions feature an adjustable, phase-sensitive thermal overcurrent release or an electromagnetic quick release, which must be specified during the ordering process. These features cannot be retrofitted.
Technical Data
Explosion Protection
| Area of application | European Union (ATEX), IECEx |
| Application range (zones) | 1, 2, 21, 22 |
| IECEX gas certificate | IECEx PTB 06.0090 |
| IECEx gas explosion protection | Ex db eb IIC T5 Gb |
| IECEx dust certificate | IECEx PTB 06.0090 |
| IECEx dust explosion protection | Ex tb IIIC T95 °C Db |
| ATEX gas certificate | PTB 01 ATEX 1024 |
| ATEX gas explosion protection | II 2 G Ex db eb IIC T5 Gb |
| ATEX dust certificate | PTB 01 ATEX 1024 |
| ATEX dust explosion protection | II 2 D Ex tb IIIC T95 °C Db |
| Certificates | ATEX (PTB), Canada (FM), China (NEPSI), IECEx (PTB), India (PESO) |
| Declaration of conformity | ATEX (EUK), China (CCC) |
Electrical Data
| AC release voltage | - |
| Current-setting range | 9 – 12.5 A |
| Ammeter present | No |
| Auxiliary contacts | 1 NO, 1 NC |
| Release | without |
| No. of poles | 3 |
| Frequency range | 50 – 60 Hz |
Ambient Conditions
| Ambient temperature | -20°C ... +40°C (-4 °F ... +104 °F) |
Mechanical Data
| Degree of protection (IP) | IP66 |
| Degree of protection note | according to EN/IEC 60529 |
| Enclosure material | Polyester resin, Glass fibre reinforced |
| Min. solid conn. cr.-sect. AWG | AWG 16 |
| Max. solid conn. cr.-sect. AWG | AWG 8 |
| Min. f.stra. con. cr.-sec. AWG | AWG 16 |
| Type of screw connection | 8161 |
| Width | 170 mm (6.69 in) |
| Height | 227 mm (8.94 in) |
| Depth | 131 mm (5.16 in) |
| Handle colour | Black |
| Protective collar colour | Black |
| Rotary actuator labelling | 0 – 1 |
| Seal | Silicone, foamed |
| Lockable in | Three times in 0 position |
| Weight | 3.2 kg (7.05 lb) |
Components
| Cable glands and entries | 3 x M25 Ø 7 – 17 mm |
Dimensional Drawings
All Dimensions in mm [inches] – Subject to Alterations
Diagram Description: The diagram shows a rectangular device with mounting holes and connection terminals. Key dimensions are labeled in millimeters and inches, including width (170mm / 6.69in), height (227mm / 8.94in), and depth (131mm / 5.16in). It also indicates the position of auxiliary contacts (1 NO, 1 NC) and cable entry points.
Cable entries
| Version | Auxiliary contacts | Cable glands Series 8161 | Stopping plugs Series 8290 |
| Current-setting range up to 16 A | without | M25 x 1.5 | M25 x 1.5 |
| with | A, B | – | |
| A, B, C | C | ||
| Current-setting range 16 to 20 A, 20 to 22.5 A | without | C | C |
| with | A, B | A, B | |
| A, B | C |
We reserve the right to make alterations to the technical data, dimensions, weights, designs and products available without notice. The illustrations cannot be considered binding.
Document Revision: 2025-07-22 V 0.132 EN
Manufacturer: R. STAHL Schaltgeräte GmbH | Am Bahnhof 30 | 74638 WALDENBURG
Contact: Tel. +49 7942 943 1700 | +49 7942 943 1777 | Email: sales.de@r-stahl.com | r-stahl.com
