24V TRANSFORMERS
Wolf ATEX Transformers are CE marked and certified for safe use in Zones 1 and 2 potentially explosive gas atmospheres, as well as Zones 21 and 22 potentially explosive dust atmospheres, provided the T-class and ambient temperature conditions are met.

316L marine grade Stainless Steel 24V Transformer
Product Information
LL-133/XXX & LL-233/XXX
ZONES: 1, 2, 21 AND 22
Wolf ATEX Transformers are CE marked and certified for safe use in Zones 1 and 2 potentially explosive gas atmospheres, as well as Zones 21 and 22 potentially explosive dust atmospheres, provided the T-class and ambient temperature conditions are met.
Designed for Hazardous Area maintenance tasks, these ATEX and IECEx certified transformers convert 110V and 230V to 24V. They are specifically engineered for use with the Wolf range of temporary ambient and task lighting, as well as ancillary equipment, delivering a reliable and safe power source in potentially explosive atmospheres.
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316L Marine Grade Stainless Steel
Both the enclosure and outer skid are 316L marine grade Stainless Stell
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High Ambient Temperature
Up to +55°C ambient temperature
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T4 Temperature Class
Models available certified to T4 temperature class
Features & Benefits
- ATEX/IECEx certified for use in Zones 1/ 2 potentially explosive gas and Zones 21/22 potentially explosive dust atmospheres
- Rated for up to 400VA
- T3/T4 temperature class
- Up to +55°C upper ambient temperature
- Robust and durable construction
- Fitted with 15m SY 2.5 mm² cable as standard – different cable types and lengths are available on request
- Fitted with 4 x 24V ATX 2P+E output sockets as standard – other sockets are available on request
- IP66 Ingress Protection
- Weighs just 28 kg (excluding cable)
- 316L marine grade stainless steel enclosure housed in a 316L marine grade stainless steel outer protective skid, which protects sockets against impact and aids transportation
LL-133/T3
Gas Zone: 1 and 2
Dust Zone: 21 and 22


LL-233/T3
Gas Zone: 1 and 2
Dust Zone: 21 and 22


LL-133/T4
Gas Zone: 1 and 2
Dust Zone: 21 and 22


LL-233/T4
Gas Zone: 1 and 2
Dust Zone: 21 and 22


Model | LL-133/T3 | LL-233/T3 | LL-133/T4 | LL-233/T4 |
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Voltage | 110V:24V | 230V:24V | 110V:24V | 230V:24V |
Code | II2 GD Ex d e IIC T3 Gb Ex t IIIC T195°C Db IP66 |
II2 GD Ex d e IIC T4 Gb Ex t IIIC T130°C Db IP66 |
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Temperature Class (Gas) | T3 | T4 | ||
Maximum Power / Ambient Temperature | 400VA: T3 -20°C TO +30°C 320VA: T3 -20°C TO +42°C |
250VA: T3 -20°C TO +55°C | ||
Temperature Class (Dust) | 195°C | 130°C | ||
Certificate Number | ATEX: LCIE 02 ATEX 6118X IECEX: LCI 11.0008X |
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Type of protection |
‘e’ increased safety, ‘d’ flameproof, ‘t’ enclosure |
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Area of Classifiaction (Gas) | Zones 1 and 2, Gas groups IIA, IIB and IIC | |||
Area of Classification (Dust) | Zones 21 and 22, Dust Groups IIIA, IIIB and IIIC | |||
Enclosure | Marine grade (316L) stainless steel enclosure and skid | |||
Input Cable | 15m SY cable 2.5 mm² | |||
Input Plug | ATX 110V 2P+E plug fitted as standard | ATX 230V 2P+E plug fitted as standard | ATX 110V 2P+E plug fitted as standard | ATX 230V 2P+E plug fitted as standard |
Input Voltage | 110V AC +6%, -10% | 230V AC +6%, -10% | 110V AC +6%, -10% | 230V AC +6%, -10% |
Output Voltage | 24V AC | |||
Socket Arrangement | 4 output sockets, ATX 24V 2P+E as standard | |||
2 sockets on each unit side | ||||
Dimensions | 512 mm x 562 mm x 260 mm | |||
Ingress Protection | IP66 | |||
Approcimate Weight | 28 kg (without cable) |
- All information has been gathered under laboratory conditions, the user must regard the values given as approximate.
- Changes may be made to the above specification without notification, details are available on request.
Product Dimensions

Stainless Steel 24V Transformer Information Sheet
(PDF, 1.35 MB)
24V SS Transformer Instructions
(PDF, 183 KB)
24V SS Transformer ATEX Certificate
(PDF, 3.4 MB)
24V SS Transformer IECEx Certificate
(PDF, 715 KB)