MEDC SM87BG Call Point | ATEX IECEx Explosion Proof & Hazardous Area Call Points
MEDC SM87BG are ATEX call points designed for use in the most arduous environmental conditions. The hazardous area call points, manufactured by MEDC, are manually operated fire alarms that are both simple to install and maintain in explosive atmospheres in onshore or offshore locations in accordance with the ATEX & IECEx certification and explosion protection levels.
Intrinsically Safe Ex ia and Flameproof Ex d versions of each call point are available for safely raising the alarm in potentially explosive atmospheres including ATEX & IECEx Zone 1 and Zone 2 hazardous areas. Both the Ex ia units and Ex d versions of the MEDC SM87PG call point have the same external appearance.
A choice of either stainless steel or alloy makes the ATEX call point range suitable for either the offshore or onshore industries. Stainless steel is one of the most durable materials available on the market and is both hard wearing and corrosion resistant. This increases the life of products in harsh environments and therefore reduces maintenance costs.
➡ View the complete range of MEDC call points.
ATEX Call Points Zone 1 & Zone 2 | Features
Call Point Order Code MEDC SM87BG.
- Zone 0, Zone 1 and Zone 2 hazardous area use*.
- Exia IICT4 or Exd IIC T5/T6.
- ATEX aproved call point, Ex II 1G (Exia) Ex II 2GD (Exd).
- BASEEFA certified
- UL Listed (PB only), Class I, Div 1, Groups C & D.
- CSA certified.
- IECEx certified.
- TR CU* certified.
- Chinese (CQST) certified.
- Brazilian (Inmetro) certified.
- DNV certified.
- SIL2 ceritified.
- IP66 and IP67.
- Certified temperature: –55°C to +70°C*.
- Stainless steel or marine grade alloy ATEX call points
- Robust yet lightweight.
- Easy to maintain hazardous area call points
*Depending on version.
Selection of SM87BG models:
Breakglass Latching BGL
Lift Flap Breakglass Latching LBGL
Push Button Latching Key Reset PBL
Push Button Only Momentary Action PBM
Hazardous Area Guide
♦ Definition : Potentially explosive atmospheres exist where there is a risk of explosion due to mixtures of gas/air, vapour/air, dust/air or other flammable combinations. Where electrical equipment has to be used in these areas, it must be so designed and constructed such that it does not create sources of ignition capable of igniting these mixtures.
♦ Area Classification : Process plants are divided into Zones (European and IEC method) or Divisions (North American method) according to the likelihood of a potentially explosive atmosphere being present. Note: North American legislation now allows Zones to be used to classify areas, where this practice is used it follows the IEC Zone method.
|European ATEX & IEC Classification||Definition of Zone or Division||North American Classification|
|Zone 0 (gases)||A hazardous area in which an explosive mixture is continuously present or present for long periods||Class I Division I (gases)|
|Zone 20 (dusts)||Class II Division 1 (dusts)|
|Zone 1 (gases)||A hazardous area in which an explosive mixture is likely to occur in normal operation||Class I Division 1 (gases)|
|Zone 21 (dusts)||Class II Division 1 (dusts)|
|Zone 2 (gases)||A hazardous area in which an explosive mixture is not likely to occur in normal operation and if it occurs it will exist only for a short time||Class I Division 2 (gases)|
Class II Division 2 (dusts)
|Zone 22 (dusts)||Class III Division 1 (fibres)|
Class III Division 2 (fibres)
MEDC SM87BG Hazardous Area Manual Call Point
|Hazardous Area Certifications|
|ATEX Ex d||Cert. no. Baseefa03ATEX0075. ATEX Approved Ex II 2GD|
Certified to: EN60079-0, EN60079-1, EN60079-31
Ex d IIC T5/T6 Gb, Ex tb IIIC T85°C/T100°C Db. IP66/IP67
|ATEX Ex ia||Cert no. Baseefa 02ATEX0152X. ATEX Approved Ex II 1G|
Certified to: EN60079-0, EN60079-11, EN60079-26
Ex ia IIC T4 Ga
|IECEx Ex d||Cert. no. IECEx BAS 09.0060|
Certified to: EN60079-0, EN60079-1, EN60079-31
Ex d IIC T5/T6 Gb, Ex tb IIIC T85°/T100°C Db. IP66/IP67
|IECEx Ex ia||Cert. no. IECEx BAS 10.0033X|
Certified to: IEC60079-0, IEC60079-11, IEC60079-26
Ex ia IIC T4 Ga
|UL||Listing no. E186629|
UL listed to Class 1, Div 1. Groups C & D. (SM87PBL)
|ULC||Cert. no. 20091023-E320282|
ULC certified for Class I, Zone 1 Groups C & D
|CSA Ex d||Class 1, Div 1 & 2. Group D|
|CSA Ex ia||Class 1, Div 1 & 2. Groups A-D|
|TR CU Ex d||1Ex d IIC T5/T6 Gb, Ex tb IIIC T85°/T100°C Db. IP66/IP67|
Russian Fire Approved
|TR CU Ex ia||0Ex ia IIC T4 Ga. Russian Fire Approved|
|INMETRO Ex d||Ex d IIC T5/T6 Gb|
|CQST Exd||Exd IICT85°C/T100°C|
|CQST Exia||Exia IIC T4|
|Type Approvals||DNV (IEC 60945) (Stainless Steel SM87PB only|
|SIL||SM87PB only – SIL2 Certification to IEC61508. Cert no. 20151118-4786827453|
|Material||Grade 316 ANC4B stainless steel or LM 25 TF marine grade alloy|
|Finish||Paint finish as standard or to customer specification|
|Voltage||Ex d 24V a.c./d.c. Ex ia 28V|
|Switches||2 pole c/o, wired to terminals|
Optional up to 4 pole (UL version 2 pole only)
|Optional indicator||A red high intensity LED can be fitted for alarm indication|
As standard the LED is not provided with over current protection. The forward
current (If) should be limited to 20mA
|Certified temp||Ex d* –55ºC to +70ºC. Ex ia*–55ºC to +60ºC|
–20ºC to +55ºC (LED version only)
UL –40ºC to +70ºC, –20ºC to +55ºC (LED version only)
CSA –50ºC to +55ºC (Ex d), –50ºC to +40ºC (Ex ia)
*Note: includes ATEX, IECEx, CUTR, Brazilian & Chinese versions
|Weight||3·8 kg. steel (approx.) or 2.5 kg. alloy (approx|
|Ingress protection||IP66 & IP67. SM87PB IP68 (35m for 40 hours)|
|Entries||Up to 4 x M20 or M25 ISO Ex d/Ex ia|
Up to 4 x 1/2” or 3/4” NPT UL
|Terminals||Will accept up to 1·5sqmm cable|
|Resistor values||470R minimum (d.c. & I.S. units only)|
Eaton MEDC SM87BG – Ordering Requirements
The following code is designed to help in selection of the correct MEDC hazardous area call point with ATEX approval and certification. Build up the part number of the call point by inserting the code for each component into the appropriate box.
MEDC have developed ATEX & IECEx call points designed for harsh and hazardous area conditions and where there is a risk of explosion due to the presence of flammable atmospheres both onshore and offshore – since 1975 MEDC have been designers and manufacturers of Explosion Proof alarm, signal, control and communications equipment.
Thorne & Derrick International, based in the UK, distribute the extensive range of Eaton MEDC ATEX Certified manual call points, visual, audible alarms, loudspeakers and telephones for hazardous area workplaces, including Zone 1 & Zone 2 explosive atmospheres.