Stopping Plug Polyamide. Type: CPM
This document provides technical specifications, dimensions, and application details for the Eaton Crouse-Hinds CPM Polyamide Stopping Plug.
Applications
The CPM stopping plug is designed to seal unused entries on electrical equipment in hazardous areas, maintaining Ex eb, Ex tb equipment protection types. When installed, the CPM stopping plug protects against moisture, dusts, and other contaminants entering electrical apparatus, permitting the safe introduction of future wiring.
CPM stopping plug offers three installation solutions from the outside: Allen key, flat head screwdriver, or a spanner/wrench. The design provides protection against excessive tightening during assembly and a collar that prevents tools from marking the face of the mating surface during installation.
Made of black polyamide, the CPM stopping plug incorporates a sealing lip which maintains IP66 without the need for an additional seal. Alternatively, a version with an EPDM O-ring can achieve IP68 (40 m for 30 min).
Features
- Certified ATEX, IECEX, NEC & CEC ⚡️
- High level of ingress protection to IP66, IP67 & IP68 ?
- Wide variety of ISO and PG threads
Technical Characteristics
| Approvals | Specification |
|---|---|
| Applications | Safe to use in zones 1, 2, 21 and 22 |
| Protection Class | Ex II 2G - Ex eb IIC Gb Ex II 2D - Ex tb IIIC Db IP66 |
| ATEX Certificate | INERIS 22 ATEX 0006X |
| IECEx Certificate | IECEx INE22.0008X |
| UKCA Certificate | UKCA CML 23 UKEX 3087X |
| NEC / CEC Application & Protection Class | Class 1 Zone 1 AEx eb IIC Gb, Class 2 Zone 21 AEx tb IIIC Db |
| NEC / CEC Application & Protection Class | Zone 1, Ex eb IIC Gb X, Zone 21, Ex tb IIIC Db X |
| NEC / CEC Certificate | UL E534172 (M20 to M63 only) |
| Operating temperature | -30°C to +90°C -30°C to +80°C with EPDM o-ring |
| IP Rating | IP66 without O-Ring fitted to flat surface (Ra max = 1,6 µm) Standard Option IP67 / IP68 with EPDM O-ring or rough surface (Ra max = 6,3 µm) |
| Materials | Stopping Plug: Polyamide UL94 HB O-Ring: EPDM |
Dimensions
Illustration of a stopping plug showing key dimensions. Labels indicate: 'A' for flat key width, 'E' for length of thread, 'F' for thread size (e.g., M16, PG9), 'H' for hex allen key size, and 'L' for height of the head.
ISO Metric Threads
| Thread (F) | Hex Allen Key (H) | Flat Key (A) | Length of Thread (E) | Height of Head (L) |
|---|---|---|---|---|
| M16 | 6 | 19.0 | 13.2 | 5.9 |
| M20 | 8 | 23.0 | 13.2 | 5.9 |
| M25 | 10 | 28.0 | 13.2 | 6.9 |
| M32 | 12 | 36.0 | 13.1 | 7.4 |
| M40 | 12 | 44.0 | 13.1 | 7.4 |
| M50 | 12 | 54.0 | 13.3 | 7.9 |
| M63 | 14 | 67.0 | 15.0 | 8.4 |
PG Threads
| Thread (F) | Hex Allen Key (H) | Flat Key (A) | Length of Thread (E) | Height of Head (L) |
|---|---|---|---|---|
| PG9 | 5 | 19.0 | 10.0 | 5.9 |
| PG11 | 5 | 22.0 | 10.5 | 5.9 |
| PG13.5 | 8 | 24.0 | 9.2 | 5.9 |
| PG16 | 10 | 27.0 | 10.2 | 6.9 |
| PG21 | 12 | 32.0 | 10.7 | 7.4 |
| PG29 | 12 | 40.0 | 13.1 | 7.4 |
| PG36 | 12 | 52.0 | 13.2 | 7.9 |
| PG42 | 12 | 59.0 | 15.0 | 7.9 |
All dimensions in mm.
Standard Order Codes
ISO Metric
| Size | PLUG ONLY IP66 - FLAT SURFACE | PLUG + O RING IP 67 / 68 OR ROUGH SURFACE |
|---|---|---|
| M16 | CPM1100E | CPM1100EU |
| M20 | CPM1200E | CPM1200EU |
| M25 | CPM1300E | CPM1300EU |
| M32 | CPM1400E | CPM1400EU |
| M40 | CPM1500E | CPM1500EU |
| M50 | CPM1600E | CPM1600EU |
| M63 | CPM1700E | CPM1700EU |
PG
| Size | PLUG ONLY IP66 - FLAT SURFACE | PLUG + O RING IP68 OR ROUGH SURFACE |
|---|---|---|
| PG9 | CPM2100E | CPM2100EU |
| PG11 | CPM2200E | CPM2200EU |
| PG13.5 | CPM2300E | CPM2300EU |
| PG16 | CPM2400E | CPM2400EU |
| PG21 | CPM2500E | CPM2500EU |
| PG29 | CPM2600E | CPM2600EU |
| PG36 | CPM2700E | CPM2700EU |
| PG42 | CPM2800E | CPM2800EU |
Other Certificates
The product is certified and recognized by various international standards:
- ⚡️ EX (Explosion Proof)
- ⚡️ IECEX Certified
- ✅ CE Marked
- 2️⃣G (Gas Zone 2)
- 2️⃣D (Dust Zone 2)
- ? IP66, IP67, IP68 Ingress Protection
- ?? UL Listed
- ?? CSA Certified
Industrial Context
An industrial illustration depicts a robotic arm and a factory setting, suggesting the product's suitability for automated manufacturing and hazardous industrial environments.
