R. STAHL Motor Protection Circuit Breaker 8146/5-V27
Article No.: 249250
Product Description
The R. STAHL 8146/5-V27 motor protection circuit breakers are designed to protect Ex e and Ex d motors, as well as associated conductors and systems. Standard versions feature an adjustable thermal overload release and a phase-sensitive instantaneous electromagnetic release. The unit is housed in a robust glass-fiber reinforced polyester resin enclosure.
Key Features:
- Protection for Ex e and Ex d motors and systems.
- Robust glass-fiber reinforced polyester resin enclosure.
- Optional: undervoltage release, operating current release, ammeter, auxiliary contact.
Technical Specifications
Explosion Protection
| Characteristic | Specification |
|---|---|
| Application Area | European Union (ATEX), IECEx |
| Application 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) |
| Certificate of Conformity | ATEX (EUK), China (CCC) |
Electrical Characteristics
| Characteristic | Specification |
|---|---|
| AC Trip Voltage | 16 – 20 A |
| Current Adjustment Range | 16 – 20 A |
| Ammeter Present | No |
| Auxiliary Contacts | 1 NO, 1 NF |
| Release | None |
| Number of Poles | 3 |
| Frequency Range | 50-60 Hz |
Mechanical Characteristics
| Characteristic | Specification |
|---|---|
| Degree of Protection (IP) | IP66 |
| Degree of Protection Notice | According to EN/IEC 60529 |
| Enclosure Material | Polyester resin, reinforced with glass fibers |
| Conductor Cross-section (single wire, min.) | AWG 20 |
| Conductor Cross-section (single wire, max.) | AWG 8 |
| Conductor Cross-section (fine-strand, min.) | AWG 20 |
| Connection Type | Screw terminal |
| Width | 170 mm (6.69 in) |
| Height | 340.5 mm (13.41 in) |
| Depth | 131 mm (5.16 in) |
| Handle Color | Black |
| Protection Cap Color | Black |
| Rotary Handle Inscription | 0-1 |
| Seal | Silicone, foamed |
| Lockable in '0' position | Yes |
| Weight | 4.25 kg (9.37 lb) |
Components
Cable Glands: 2 x M32 Ø 9 ... 21 mm, 1 x M25 Ø 7 ... 17 mm
Dimensional Drawing
The diagram shows the overall dimensions of the unit. The main dimensions are:
- Width: 170 mm [6.69 in]
- Height: 340.5 mm [13.41 in]
- Depth: 131 mm [5.16 in]
- Internal dimensions for cable entry are indicated with specific sizes for glands and knockouts.
Cable Entry Versions
| Current Adjustment Range | Auxiliary Contacts | Cable Glands (Series 8161) | Blanking Plugs (Series 8290) |
|---|---|---|---|
| Without | A, B | M25 x 1.5 | M25 x 1.5 |
| With | A, B, C | M32 x 1.5 | M25 x 1.5 |
| Up to 16 A | C | - | - |
| 16 ... 20 A, 20 ... 22.5 A | A, B | - | - |
| C | - | - |
Notes
Subject to technical modifications, dimensions, weights, construction types, and delivery possibilities. Figures are for indicative purposes only.
