R. STAHL 8146/5-V27 Molded Case Circuit Breaker for Motor Protection
Art. No. 249245
Product Overview
R. STAHL Series 8146/5-V27 molded case circuit breakers are designed for motor protection in Ex e and Ex d environments, as well as for 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 and cannot be retrofitted.
Key features include:
- Conductor and system protection for Ex e and Ex d motors
- Robust enclosure made of glass fibre reinforced polyester resin
- Optional features: Undervoltage release, shunt trip, ammeter, auxiliary contact
Technical Data
Explosion Protection
| Category | Details |
|---|---|
| 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
| Parameter | Value |
|---|---|
| AC release voltage | - |
| Current-setting range | 2.5 – 4 A |
| Ammeter present | No |
| Auxiliary contacts | 1 NO, 1 NC |
| Release | without |
| No. of poles | 3 |
| Frequency range | 50 – 60 Hz |
Ambient Conditions
| Condition | Range |
|---|---|
| Ambient temperature | -20°C ... +40°C |
| Ambient temperature | -4 °F ... +104 °F |
Mechanical Data
| Parameter | Value |
|---|---|
| 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 |
| Width, inches | 6.69 in |
| Height | 227 mm |
| Height in inches | 8.94 in |
| Depth | 131 mm |
| Depth in inches | 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 | 2.63 kg |
| Weight | 5.8 lb |
Components
Cable glands and entries
3 x M25 Ø 7 – 17 mm
Dimensional Drawings
All Dimensions in mm [inches] – Subject to Alterations
A diagram shows the external dimensions of the unit. Key dimensions include width 170 mm [6.69 in], height 227 mm [8.94 in], and depth 131 mm [5.16 in]. Other dimensions indicated are 152 mm [5.98 in], 175 mm [6.89 in], and a circular cutout of Ø 0.28 inches.
Cable entries
| Version | Auxiliary contacts | Cable glands Series 8161 | Stopping plugs Series 8290 | ||||
|---|---|---|---|---|---|---|---|
| Current-setting range up to 16 A; 1 NC + 1 NO | without | A, B | M25 x 1.5 | C | M32 x 1.5 | C | M25 x 1.5 |
| Current-setting range 16 to 20 A, 20 to 22.5 A | without | A, B, C | C | A, B | A, B | C |
R. STAHL Schaltgeräte GmbH reserves the right to make alterations to the technical data, dimensions, weights, designs and products available without notice. The illustrations cannot be considered binding.
