Type 4 Terminal and Junction Boxes
Last Updated: February 12, 2025
Description
Type 4 terminal and junction boxes are enclosures designed to house electronic components and facilitate wiring. These boxes are specifically constructed to provide protection against environmental factors such as dust, rain, sleet, and snow, making them suitable for both indoor and outdoor use. They are typically made from durable materials like metals or polymers, which offer varying degrees of conductivity and resistance to environmental conditions .
Working Principle
Type 4 terminal and junction boxes work by providing a secure and protective environment for electrical connections and components. The enclosures are designed to prevent the ingress of water and dust, ensuring the safety and reliability of the electrical systems housed within. The boxes often feature overlapping covers and drainage channels to divert moisture away from the internal components, thereby enhancing their protective capabilities .
Applications
Type 4 terminal and junction boxes are commonly used in industrial settings where exposure to harsh environmental conditions is a concern. Specific applications include outdoor electrical installations, such as those found in manufacturing plants, chemical processing facilities, and outdoor lighting systems. These boxes are also used in environments where equipment is exposed to washdowns or other cleaning processes that require water resistance .
Advantages over other Terminal and Junction Boxes
One of the primary advantages of Type 4 terminal and junction boxes is their ability to withstand aggressive environments, making them ideal for outdoor and industrial applications. They offer superior protection against water and dust compared to other types of enclosures, such as NEMA 1 boxes, which are only suitable for indoor, non-hazardous environments. Additionally, the reinforced double insulation and unique moisture-diverting design of some Type 4 boxes provide enhanced safety and reliability .
Limitations
Despite their robust design, Type 4 terminal and junction boxes may have limitations in extremely hazardous environments where explosion-proof enclosures, like NEMA 7 boxes, are required. They may also be more expensive than simpler enclosures due to their enhanced protective features and materials used in construction .
Considerations
When selecting Type 4 terminal and junction boxes, several factors should be considered. Initial costs may be higher due to the durable materials and advanced design features. However, these costs can be offset by the reduced need for maintenance and replacement, as the boxes are built to withstand harsh conditions. Durability is a key advantage, but it is important to ensure that the box size and configuration meet the specific needs of the application to avoid unnecessary expenses. Additionally, while these boxes offer excellent protection, regular inspections and maintenance are recommended to ensure continued performance and safety .
from DigiKey
"Box Metal, Steel Gray Cover Included 4.000"" L x 4.000"" W (101.60mm x 101.60mm) X 3.000"" (76.20mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
cable junction box 1.5-2.5 sqmm [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 3.46
- Length: 1.93
- Depth: 3.46
from Takachi Electronics Enclosure Co., Ltd.
IP64 and IP54 water resistant see-through hinged inspection window. Smartly designed window for protection of switches and displays, etc. Use in situations where component status, access and maintenance is necessary. Knurled thumb screws for easy securing. Be careful not to get fingers caught on the... [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.25 to 12.17
- Length: 1.02 to 1.22
- Depth: 3.75 to 4.93
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 4.000"" L x 4.000"" W (101.60mm x 101.60mm) X 4.000"" (101.60mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
cable junction box up to 2.5 qmm [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 3.46
- Length: 1.93
- Depth: 3.46
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 12.000"" L x 10.000"" W (304.80mm x 254.00mm) X 5.000"" (127.00mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
junction boxe Diam.60 IP44 Pression caps [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Material: Thermoplastic
- Depth: 1.38
- Ingress Protection(IP) Rating Against Foreign Objects: 4
from DigiKey
"Box Metal, Steel Gray Cover Included 4.000"" L x 4.000"" W (101.60mm x 101.60mm) X 3.000"" (76.20mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
junction boxe Diam.80 IP44 Pression caps [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Material: Thermoplastic
- Depth: 1.57
- Ingress Protection(IP) Rating Against Foreign Objects: 4
from DigiKey
"Box Metal, Steel Gray Cover Included 6.000"" L x 6.000"" W (152.40mm x 152.40mm) X 4.000"" (101.60mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
junction boxe 65X65X32 IP44 Pression cap [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.56
- Length: 2.56
- Depth: 1.26
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 24.000"" L x 12.000"" W (609.60mm x 304.80mm) X 6.000"" (152.40mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
junction boxe 80X80X40 IP44 Pression cap [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 3.15
- Length: 3.15
- Depth: 1.57
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 20.000"" L x 16.000"" W (508.00mm x 406.40mm) X 8.000"" (203.20mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
CASSETTA DI DERIVAZIONE CON COPERCHIO BA [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.85
- Length: 2.91
- Depth: 1.61
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 16.000"" L x 12.000"" W (406.40mm x 304.80mm) X 7.000"" (177.80mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Halogen free Junction boxes RAL7035 [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.05
- Length: 3.5
- Depth: 3.5
from DigiKey
"Box Metal, Steel Gray Cover Included 3.500"" L x 3.250"" W (88.90mm x 82.55mm) X 2.750"" (69.85mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 5.04
- Length: 6.5
- Depth: 2.83
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 11.750"" L x 8.500"" W (298.45mm x 215.90mm) X 3.000"" (76.20mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 1.38
- Length: 3.5
- Depth: 1.02
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 18.500"" L x 15.250"" W (469.90mm x 387.35mm) X 3.000"" (76.20mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.52
- Length: 4.53
- Depth: 1.02
from DigiKey
"Box Metal, Steel Gray Cover Included 3.500"" L x 3.250"" W (88.90mm x 82.55mm) X 2.750"" (69.85mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 4.76
- Length: 6.73
- Depth: 2.01
from DigiKey
"Box Metal, Steel Gray Cover Included 4.000"" L x 4.000"" W (101.60mm x 101.60mm) X 4.750"" (120.65mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 4.76
- Length: 6.73
- Depth: 3.98
from DigiKey
"Box Metal, Steel Gray Cover Included 4.000"" L x 4.000"" W (101.60mm x 101.60mm) X 4.750"" (120.65mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 5.04
- Length: 6.5
- Depth: 2.83
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 10.000"" L x 4.000"" W (254.00mm x 101.60mm) X 4.750"" (120.65mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.17
- Length: 3.15
- Depth: 0.8268
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 14.000"" L x 10.750"" W (355.60mm x 273.05mm) X 4.750"" (120.65mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Die Cast Enclosure [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Width: 2.17
- Length: 2.36
- Depth: 1.02
from DigiKey
"Box Metal, Steel Gray Hinged Door, Lid 21.380"" L x 20.000"" W (543.05mm x 508.00mm) X 10.000"" (254.00mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Abox m 025-2,5 ² Verbindungsdose Werkstof [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.23
- Length: 3.23
- Depth: 2.05
from DigiKey
"Console Metal, Steel Gray Cover Included, Slanted Top 3.500"" L x 3.250"" W (88.90mm x 82.55mm) X 4.880"" (123.95mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- NEMA Rating: Type 12; Type 13
- Material: Steel
- Ingress Protection(IP) Rating Against Foreign Objects: 5
from RS Components, Ltd.
Abox m 025-L Verbindungsdose Werkstoff: [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.23
- Length: 3.23
- Depth: 2.05
from DigiKey
"Box Metal, Aluminum Unpainted Cover Included 4.409"" L x 2.362"" W (112.00mm x 60.00mm) X 1.220"" (31.00mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: Aluminum
from RS Components, Ltd.
Abox m 025 AB-2,5 ² Verbindungsdose Werks [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.23
- Length: 3.23
- Depth: 2.05
from DigiKey
"Stomp Box Metal, Aluminum Unpainted Cover Included 4.724"" L x 3.720"" W (120.00mm x 94.50mm) X 1.339"" (34.01mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: Aluminum
from RS Components, Ltd.
Abox m 025 AB-L Verbindungsdose Werkstof [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.23
- Length: 3.23
- Depth: 2.05
from DigiKey
"Stomp Box Metal, Aluminum Unpainted Cover Included 4.409"" L x 2.402"" W (111.99mm x 61.01mm) X 1.220"" (30.99mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: Aluminum
from RS Components, Ltd.
Abox m 040-4 ² Verbindungsdose Werkstoff: [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.7
- Length: 3.7
- Depth: 2.24
from DigiKey
"Box Metal, Aluminum Unpainted Cover Included 3.642"" L x 1.516"" W (92.51mm x 38.51mm) X 1.220"" (30.99mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: Aluminum
from RS Components, Ltd.
Abox m 040-L Verbindungsdose Werkstoff: [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.7
- Length: 3.7
- Depth: 2.24
from DigiKey
"Box Metal, Aluminum Unpainted Cover Included 7.559"" L x 4.370"" W (192.00mm x 111.00mm) X 2.441"" (62.00mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: Aluminum
from RS Components, Ltd.
Abox m 040 AB-L Verbindungsdose Werkstof [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 3.7
- Length: 3.7
- Depth: 2.24
from DigiKey
"Box Plastic, ABS Gray Cover Included 5.891"" L x 3.150"" W (149.63mm x 80.01mm) X 2.028"" (51.51mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: ABS
- Features: Flame Retardant
from RS Components, Ltd.
Abox 160-L [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 7.09
- Length: 7.09
- Depth: 3.58
from DigiKey
"Box Plastic, ABS Black Cover Included 4.744"" L x 3.681"" W (120.50mm x 93.50mm) X 1.335"" (33.91mm)" [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Ingress Protection(IP) Rating Against Foreign Objects: 5
- Material: ABS
- Features: Flame Retardant
from RS Components, Ltd.
Abox 350-L [See More]
- Ingress Protection(IP) Rating Against Moisture: 4; 5
- Width: 9.84
- Length: 9.84
- Depth: 4.53
from EXM Manufacturing Ltd.
UNFLANGED TYPE. ALUMINUM MATERIAL. NATURAL COLOR. 8 INCH. 8 WIDTH IN INCH. 8 INCH. 8 HEIGHT IN INCH. 4 INCH. 4 DEPTH IN INCH. 203.2 HEIGHT IN MM. 203.2 WIDTH IN MM. UL, CSA APPROVAL. 101.6 DEPTH IN MM. WALL MOUNTING. NEMA 3/3R, IP64 ENCLOSURE. GASKETED, SCREW ON COVER TYPE. 12 GAUGE MATERIAL... [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Depth: 4
- Width: 8
- Material: Aluminum
from EXM Manufacturing Ltd.
UNFLANGED TYPE. STEEL MATERIAL. ELECTROSTATICALLY APPLIED POLYESTER POWDER OVER PHOSPHATIZED SURFACE FINISH. ANSI/ASA 61 GRAY COLOR. 4 INCH. 4 WIDTH IN INCH. 4 INCH. 4 HEIGHT IN INCH. 3 INCH. 3 DEPTH IN INCH. 101.6 HEIGHT IN MM. 101.6 WIDTH IN MM. UL, CSA APPROVAL. 76.2 DEPTH IN MM. WALL MOUNTING. [See More]
- Ingress Protection(IP) Rating Against Moisture: 4
- Depth: 3
- Width: 4
- Material: Steel