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AWhen terminal blocks or approved Class I, Division 2 devices are installed within the enclosure in accordance with NEC/CEC requirements. These enclosures are NOT explosionproof

and will NOT contain an explosion. Installation of arcing and sparking devices which are not Class I, Division 2 rated or higher is NOT PERMITTED.

BEnclosures with gland plates are limited to -40°C.

CPainted mild steel not available with ATEX or IECEx rating.

*Painted versions only available on demand.

Applications:

• Designed to meet the requirement for

distribution and lighting junction boxes

• Available in 13 sizes with standard

finishes of painted or 316L stainless

steel, together with the high IP rating,

make these enclosures suitable for all

environmental conditions

• Stainless steel versions are particularly

recommended for use in marine or other

corrosive environments

Technical specifications:

Description Specification

Material

1.5mm thick stainless steel grades: 316L (1.4401); 304 (1.4301)

or painted mild steelC (optional)

Finish

Stainless steel

Painted

Corrosion-resistant electro-polished surface

RAL 7032 (gray)

Gasket Foam-in-place silicone (standard); cut silicone (with gland plates)

Cover mounting 4 x M6 slotted, hexagon head captive screws

Grounding

STB121208-303020

STB383822-604022

M6 internal/external ground stud

M10 internal/external ground stud

Box mounting

STB121208-252512

STB163812-303020

STB383822-604022

2 x external lugs, 0.315” (8mm) clearance holes

4 x external lugs, 0.315” (8mm) clearance holes

4 x external lugs, 0.433” (11mm) clearance holes

Equipment mounting

Mounting pillars or TAS 20 rails welded to base of enclosure

(see Dimensions for details)

Ingress protection All types IEC/EN 60529, IP66

Service temperature

range

No gland plates

With gland plates

-55°C to +120°C

-40°C to +120°C

Impact resistance Minimum 7 J (Nm) to IEC/EN 60079-0, IK 10

Gland plates STB383822-604022

Optional 3mm thick gland plates available in bottom, left, top

and right configurations

Certifications and

compliances:

S-TB enclosures

Cl. I, Div. 2, Groups A, B, C, DA

NEMA Type 3S, 4 (painted steel*)

NEMA Type 4X (stainless steel)

NEMA Type 6

IP66

IECEx/ATEX

TR-CU/EAC

• Class I, Division 2, Groups A, B, C, DA

• cULus to UL50/C22.2 No. 94-M91

• NEMA Type 3S, 4 (painted steel*), NEMA

Type 4X (stainless steel), NEMA Type 6;

IP66

• UL Listed E115376 (Ordinary Location)

• IECEx and ATEX component certificate

– BVS13ATEXE015U and IECEx BVS

13.0025U

• 2G Ex eb IIC Gb or 2D Ex tb IIIC Db

• TR-CU and EAC certified

S-TB-T terminal boxes:

S-TB enclosures are available assembled

as custom configured and certified terminal

boxes. Options include custom entries,

cable glands and plugs with built-in terminals

(Ex-e and Ex-i) and other equipment.

Contact factory for ordering details.

Standards:

• IEC/EN 60079-0

• IEC/EN 60079-7

• IEC/EN 60079-31

• IEC/EN 60529

Certificates:

• BVS16 ATEX-E-096X

• IECEx BVS 16.0062X

• RU_C-DE.AA87.B.00885

Ambient temperatures:

• -55B/-40°C up to +40°C (T6 and maximum

surface temperature of T80°C)

• -55B/-40°C up to +55°C (T5 and maximum

surface temperature of T95°C)

• -55B/-40°C up to +65/70/80/100/110°C

(with temperature class T4 and maximum

surface temperature of T120°C)

Materials:

• Equipment available in 316L stainless

steel enclosures

Electrical ratings:

• Rated voltage up to 690V AC/DC; rated

current up to 400A; conductor cross-

sections up to 240mm

Note: Ambient temperature range depends on ratings of

built-in components.

Markings:

• ATEX and IECEx: Ex eb IIC T6/5/4 Gb;

Ex tb IIIC T80/95/120°C Db or Ex tb IIIC

T80/95/120°C

• EAC CU TR: 1Ex e IIC T6/T5 Gb X or Ex tb

IIIC T80/95/120°C Db X

• NEC 500: Class I, Division 2, Groups A, B,

C, DA

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2022 Eaton

777

STB S1 25 25 12

Ordering information:

Part number example

STBS1252512

Material

Polished 316L stainless

steel (standard)

Polished 304 stainless

steel

Decorative painted 316L

stainless steel*

Painted mild steel*

Height

As per certified range options

Width

As per certified range options

Depth

As per certified range options

S-TB enclosures

Cl. I, Div. 2, Groups A, B, C, DD

NEMA Type 3S, 4 (painted steel*)

NEMA Type 4X (stainless steel)

NEMA Type 6

IP66

IECEx/ATEX

TR-CU/EAC

DWhen terminal blocks or approved Class I, Division 2 devices are installed within the enclosure in accordance with NEC/CEC requirements. These enclosures are NOT explosionproof

and will NOT contain an explosion. Installation of arcing and sparking devices which are not Class I, Division 2 rated or higher is NOT PERMITTED.

*Painted versions only available on demand.