The RMG-4-BCL-SS is a 4-pin RMG Rubber Molded Bulkhead Connector (standard body) for panel and housing installation. Rated to 300 m (30 Bar), 250 V DC/AC / 10 A per contact (40 A total). Jam-nut panel mount, rubber over-mould body, IMCA D 035 compliant.
At a glance: RMG-4-BCL-SS | RMG BCL | 4 pin | Male Pin | 250 V DC/AC | 10 A/contact | 40 A total | 300 m | Panel mount
Key Design Features
- 4-Pin Panel Bulkhead: Circular cutout jam-nut installation.
- Standard body profile
- 300 m (30 Bar) Depth Rating
- 250 V DC/AC / 10 A Per Contact
- Rubber Over-Mould Housing: Absorbs vibration and shock at panel interface.
- Mates with RMG In-Line FS Connectors
- Gold-Plated Contacts: Contact resistance <0.01 Ohm; IR >100 Mohm.
- IMCA D 035 Compliant
- Locking Sleeve Compatible
Electrical and Mechanical Specifications
| Parameter | Value |
|---|---|
| Model number | RMG-4-BCL-SS |
| Number of contacts | 4 |
| Rated voltage | 250 V DC/AC rms |
| Rated current | 10 A per contact (40 A total) |
| Contact resistance | < 0.01 Ohm |
| Insulation resistance | > 100 MOhm (500 V DC) |
| Depth rating | 300 m (30 Bar) |
| Wet-mate cycles | > 500 |
| IP rating | IP68 (30 m / 30 min) |
| Standard | IMCA D 035 |
| Body material | Rubber over-mould (natural/synthetic) |
| Contact material | Gold-plated beryllium copper |
| O-ring material | NBR standard; EPDM/FKM on request |
| Operating temperature | -40 C to +60 C |
| Storage temperature | -40 C to +80 C |
Typical Applications
- Dive bell electrical panel feedthrough connectors
- Dive basket and stage panel bulkhead connections
- Diving spread topside control van panel connectors
- Saturation system umbilical handling panel feedthroughs
- Subsea equipment housing panel feedthrough connectors
- Diver video and comms panel connector ports
- Portable diving spread modular panel connector blocks
- IMCA-compliant DSV diving spread panel installations
Why Choose the RMG-4-BCL-SS?
Panel Integration Without Extra Hardware
Standard circular cutout plus jam-nut - no brackets or adapters required.
Direct Mating with RMG/RMK In-Line Family
Fixed panel half of the complete RMG/RMK system - mates with RMG-4-FS in-line connector.
Rubber Body Absorbs Vibration
Reduces stress fatigue at panel cutout edge compared to rigid shell bulkheads.
Full Accessory Range Compatible
Locking sleeves G-FLS-D and matching dummy plugs all available.
IMCA Compliant
Meets IMCA D 035 for all commercial offshore diving operations.
Complete RMG/RMK Family Table
| Model | Description | Type | Pins |
|---|---|---|---|
| RMG/RMK-SERIES | RMG/RMK Series Commercial Diving Connector Range Overview | OVERVIEW | - |
| RMG-2-MP | RMG-2-MP In-Line Rubber Molded Connector 2 Pin Male Plug Diver Umbilical | IL | 2 |
| RMG-2-FS | RMG-2-FS In-Line Rubber Molded Connector 2 Socket Female Diver Umbilical | IL | 2 |
| RMG-3-FS | RMG-3-FS In-Line Rubber Molded Connector 3 Socket Female | IL | 3 |
| RMG-3-MP | RMG-3-MP In-Line Rubber Molded Connector 3 Pin Male | IL | 3 |
| RMG-4-FS | RMG-4-FS In-Line Rubber Molded Connector 4 Socket Female Diver Umbilical Comms | IL | 4 |
| RMK-5-FS | RMK-5-FS In-Line Rubber Molded Connector 5 Socket Female | IL | 5 |
| RMG-4-MP | RMG-4-MP In-Line Rubber Molded Connector 4 Pin Male | IL | 4 |
| RMK-5-MP | RMK-5-MP In-Line Rubber Molded Connector 5 Pin Male | IL | 5 |
| RMK-6-FS | RMK-6-FS In-Line Rubber Molded Connector 6 Socket Female | IL | 6 |
| RMK-6-MP | RMK-6-MP In-Line Rubber Molded Connector 6 Pin Male | IL | 6 |
| G-FLS-D | G-FLS-D Female Locking Sleeve 2 3 4 Pin Female RMG Series | LS | - |
| G-MLS-D | G-MLS-D Male Locking Sleeve 2 3 4 Pin Male RMG Series | LS | - |
| K-FLS-D | K-FLS-D Female Locking Sleeve 5 6 Pin Female RMK Series | LS | - |
| K-MLS-D | K-MLS-D Male Locking Sleeve 5 6 Pin Male RMK Series | LS | - |
| XSG-2-BCL | XSG-2-BCL Rubber Molded Bulkhead Connector 2 Pin Male | BCL | 2 |
| XSG-3-BCL | XSG-3-BCL Rubber Molded Bulkhead Connector 3 Pin Male | BCL | 3 |
| XSG-4-BCL | XSG-4-BCL Rubber Molded Bulkhead Connector 4 Pin Male | BCL | 4 |
| RMG-4-BCL-SS | RMG-4-BCL-SS Rubber Moulded Bulkhead Pin Connector 4 Pin | BCL | 4 |
| RMG-4-BCL-SS-R | RMG-4-BCL-SS Round Body Rubber Moulded Bulkhead Connector 4 Pin | BCL | 4 |
| XSG-5-BCL | XSG-5-BCL Rubber Molded Bulkhead Connector 5 Pin Male | BCL | 5 |
| XSK-5-BCL-SC | XSK-5-BCL-SC Rubber Molded Bulkhead Connector 5 Pin Male Round Body | BCL | 5 |
| XSG-6-BCL | XSG-6-BCL Rubber Molded Bulkhead Connector 6 Pin Male | BCL | 6 |
| RMG-2-FSD | RMG-2-FSD Rubber Molded Dummy Connector 2 Socket Female Protective Cap | DUM | 2 |
| RMG-2-MPD | RMG-2-MPD Rubber Molded Dummy Connector 2 Pin Male Protective Cap | DUM | 2 |
| RMG-3-FSD | RMG-3-FSD Rubber Molded Dummy Connector 3 Socket Female Protective Cap | DUM | 3 |
| RMG-3-MPD | RMG-3-MPD Rubber Molded Dummy Connector 3 Pin Male Protective Cap | DUM | 3 |
| RMG-4-FSD | RMG-4-FSD Rubber Molded Dummy Connector 4 Socket Female Protective Cap | DUM | 4 |
| RMG-4-MPD | RMG-4-MPD Rubber Molded Dummy Connector 4 Pin Male Protective Cap | DUM | 4 |
| RMK-5-FSD | RMK-5-FSD Rubber Molded Dummy Connector 5 Socket Female Protective Cap | DUM | 5 |
| RMK-5-MPD | RMK-5-MPD Rubber Molded Dummy Connector 5 Pin Male Protective Cap | DUM | 5 |
| HI-USE-2M2F | Hi-Use Connector 2 Male Pins and 2 Female Sockets Diver Helmet | SPEC | 4 |
| HI-USE-SLEEVE | Hi-Use Connector Potting Sleeve 2 Male Pins 2 Female Sockets | SPEC | 4 |
| TERM-Y | Termination Y Splice TermY SCIL8M to MCIL3F and RMG3F Signal Distribution | SPEC | - |
| OEM-DIVING | OEM Underwater Connectors and Cables for Commercial Diving Systems | SPEC | - |
| XSG-1-BCL | XSG-BCL Rubber Molded Bulkhead Connector 1 Pin Male | BCL | 1 |
| EO-CABLE | EO Cable Wet Electro-Optical Connector EO Cord Diver Video and Comms | SPEC | - |
How to Select the Right RMG/RMK Connector
| Requirement | Select |
|---|---|
| 2-pin in-line pair | RMG-2-MP + RMG-2-FS |
| 3-pin in-line pair | RMG-3-MP + RMG-3-FS |
| 4-pin in-line pair | RMG-4-MP + RMG-4-FS |
| 5-pin in-line pair | RMK-5-MP + RMK-5-FS |
| 6-pin in-line pair | RMK-6-MP + RMK-6-FS |
| 2/3/4-pin panel bulkhead | XSG-2/3/4-BCL |
| 5/6-pin panel bulkhead | XSG-5/6-BCL or XSK-5-BCL-SC |
| Locking sleeve - 2/3/4-pin female | G-FLS-D |
| Locking sleeve - 2/3/4-pin male | G-MLS-D |
| Locking sleeve - 5/6-pin female | K-FLS-D |
| Locking sleeve - 5/6-pin male | K-MLS-D |
| Dummy cap - 2-pin female socket | RMG-2-FSD |
| Dummy cap - 2-pin male pin | RMG-2-MPD |
| Diver helmet combination | HI-USE-2M2F + HI-USE-SLEEVE |
| Custom OEM cable assembly | OEM-DIVING - contact sales |
Frequently Asked Questions
Q: What in-line connector mates with this bulkhead?
A: RMG-4-FS (female socket in-line) mates directly with this Male Pin bulkhead.
Q: Depth rating?
A: 300 m (30 Bar).
Q: Panel cutout dimensions?
A: Contact [email protected] for dimensional drawing.
Q: What locking sleeve fits?
A: G-FLS-D (female locking sleeve for 2/3/4-pin female in-line connector).
Q: IMCA compliant?
A: Yes - IMCA D 035.
Q: Dummy plugs for unmated face?
A: Yes - RMG-4-FSD (female socket dummy) protects bulkhead face.
Q: Voltage and current?
A: 250 V DC/AC rms, 10 A per contact.
Q: Factory cable assemblies?
A: Yes - contact [email protected] with cable spec and length.
Q: Panel cutout drawings?
A: Yes - email [email protected] with model number.
Installation, Mating and Maintenance Guidelines
Mating Procedure
(1) Inspect contacts - clean if contaminated. (2) Inspect O-rings - apply silicone grease. (3) Align and push straight - no twisting. (4) Push until fully seated. (5) Install locking sleeve immediately. (6) IR test before energising.
Deck Handling
Install dummy plugs before water entry. Rinse with fresh water after seawater exposure. Inspect rubber body after every dive. Replace any connector with damaged body immediately.
Storage and O-Ring Maintenance
Store with dummy plugs installed, dry and UV-shaded. Lubricate O-rings before each use. Replace O-rings every 2 years or on visible damage.
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