![DORMA EM500A - 24V DC Electromagnetic Door Retainer White 3](https://doorcontrolsdirect.co.uk/2878-home_default/dorma-em500a-24v-dc-electromagnetic-door-retainer-white.jpg)
DORMA EM500A - 24V DC Electromagnetic Door Retainer White
Code: DHEM500A
The DORMA EM500A - 24V DC Electromagnetic Door Retainer is an electromagnetic hold open door retainer that is suitable for use with overhead door closers and floor springs.
Read More
We offer a selection of door closers from leading manufacturers such as Geze, Dorma, Briton and Arrow. Door closers are available to suit all budgets and situations including both manual and automatic doors as well as electromagnetic hold open and swing free applications. The range is complemented with concealed door closers from Geze and Perko for use in situations where a clean, aesthetically pleasing finish to the door is required.
Approved Doc M and BS8300: Relates to accessibility and the code of practice in the design of buildings to meet the needs of disabled people. Swing Free Door closers with adjustable power sizes can help with ease of access throughout a building and will often be specified on new building projects.
Part B: To do with Fire Safety – electromagnetic door closers and holders are Part B compliant. See our blog for more information on this.
We try to ensure that choosing the right door closer for you is as easy as possible and simplify technical terminology so that you know what you’re purchasing. If you are in any doubt and would like assistance with your choice, please contact the sales team on 01305 263300 or email them at [email protected]
Backcheck – Is the cushioning effect you feel when the door is swung open and is prevented from slamming into the wall behind it. It’s a useful feature to ensure that door hardware and the door itself are given a certain level of protection from misuse. Closers with backcheck are also referred to as soft door closers.
Delayed Action/Delayed Close – In simple terms, this means the length of time it takes for the door to close after being opened. It’s often a desirable feature for Care Homes or areas where it may take people a little more time to get through the door unharmed. This function could also be referred to as a door soft closer.
Power Size – This is either fixed at a set number or variable (adjustable). The power size required is determined by the door weight and width. (See Power Size Table below).
Closing Speed – This is the adjustment for the general speed of the door closing. Installers often make the mistake of adjusting this to close the door when first installing a closer, the Power Size should always be adjusted first.
Latching Action – This is adjustable and refers to the final few degrees of closing. This is beneficial to overcome any issues with the latch or seal on a door.
Mechanical Hold Open – A Hold Open Arm can be used on door closers to achieve a rigid hold open function, however these must never be used on Fire Doors.
Hold Open – Electromagnetic Hold Open: Ideal for use on Fire Doors; the Hold Open function means that the door is held open permanently at a fixed angle (unless released by the fire alarm activation). Usually this function is provided in the cam being used, the arm itself or a mechanism inside the slide channel.
Electromagnetic Free Swing – This function means that the door with the electromagnetic closer will act like a door that doesn’t have any closer on it. It means that the door will stay open at whatever angle it is left at but will close in the event of a fire. It’s a particularly good feature to use on Care Home Bedroom Doors when Hold Open function would cause privacy issues and it meets the barrier-free needs of less-abled users.
EN Power Size |
Max. Door Weight (kg) |
Max. Door Width (mm) |
1 |
20 |
750 |
2 |
40 |
850 |
3 |
60 |
950 |
4 |
80 |
1100 |
5 |
100 |
1250 |
6 |
120 |
1400 |
7 |
160 |
1600 |
The above guide is just a guide, based on optimal testing conditions and does not take into consideration any site variables such as the following:
As well as the above, when making a decision on what type of door closer you require, it is a good idea to think about the following:
Arms and Mechanisms:
See Overhead Door Closers for more information.
There are several types of Door Closers available:
More specific information can be found within the subcategories on this website.
Active filters
Code: DHEM500A
The DORMA EM500A - 24V DC Electromagnetic Door Retainer is an electromagnetic hold open door retainer that is suitable for use with overhead door closers and floor springs.
Code: GAPDA500N
GEZE Double Action Floor Spring Accessory Pack for use on Double Action Doors with GEZE floor springs.
Code: DCB996S
A Solenoid to suit Briton 996 24V DC operation to suit the Briton 996 series door closers.
Code: ADP4SAFE350
The BEA 4Safe Safety Sensor is for use with automatic operators for door safety.
Code: DCD93BGEMF
A DORMA G-EMF 64080001 Hold Open Electromagnetic Slide Channel Arm for use with the TS91, TS92 and TS93 Door Closers.
Code: DCDBODY
A DORMA TS73EMF Mechanism - replacement part.
Code: IR996FL
Replacement Armoured Loop To Suit Briton 996 - 330mm flexible cable loop.
Code: DCAX8800-13
The Axim TC-8800-13 side load arm is for use with the TC-8802 transom door closer, and should be installed on anti-finger trap doors.
Code: DC8552
The DORMA 8552/3 Universal End Load Floor Pivot is a floor pivot set (side-load installation) for use with the RTS85 and top rails with a channel depth of 18-20mm.
Code: DCDCL
A Replacement DORMA Distributor Box and Cable for use with DORMA Electromagnetic Door Closers.
Code: DHEMKC
Geofire Keeper & One Metre Chain Plate for use with Geofire Door Retainers.
Code: ZDM7421
The DORMA 7421 Double Action Door Strap is suitable for use with DORMA Double Action Floor Springs.
Code: DCAX8800-15
The Axim TC-8800-15 end load top arm and channel is for use on standard and anti-finger trap doors, in conjunction with the TC-8802 transom door closer.
Code: DAPSA80
A DORMA Single Action Floor Spring Accessory Pack for use with DORMA floor springs on Single Action Doors.
Code: ADPARTEK
The BEA Eagle Artek Opening Sensor is a microwave universal opening sensor for all types of automatic doors.
Code: DCG3000GE
A replacement GEZE TS3000/TS5000 Electromagnetic Guide Rail for use with the TS3000E/TS5000E.
Code: ZGZ006371
A GEZE Double Action Top Centre - Type B for double action doors.
Code: DC8530
The DORMA 8530 Side Load Arm is for use with the RTS85 and top rails with a minimum 15mm channel depth and 38mm width.
Code: DCAX8800-T13
The Axim TC-8800-T13 side load arm is for use with the TC-8802 transom door closer when installed on standard aluminium side-loading doors.
Code: ZDMINTPKS
DORMA Intumescent Packs for Single and Double Action Floor Springs.
Code: DCDSPINDLE
DORMA Standard Spindle Insert for use with DORMA Floor springs.
Code: DCD93GNB
DORMA G-N Angle Bracket for use with TS91 / TS92 / TS93G closers on push side fitting in a silver finish.
Code: DC8534
The DORMA 8534 End Load Arm is an end load arm for use with transom door closers and top rails with a minimum 21mm channel depth and 35mm width.
Code: ZDM7411K56F
DORMA 7411K/56F Top Centre Teflon Bushing for use with DORMA floor springs.