They are used for most general applications, like us automation, pneumatic, eating appliances, signaling, as an input or output interface, etc.
Change-over contacts. Isolation between NO/NC: 1000 Vrms. contact gap: 0,5 mm.
Rating loads of up to:
16A @ 230V AC1
16A @ 30V DC1
0,5A @ 110V DC1
0,2A @ 220V DC1
Coils MR-C Relays C2-A20 and C3-A30
* 400V only in pollution category 2
Coils MR-C Relays C4-A40, C5-A20 and C5-A30
* C4-A40, 400V only in pollution category 2
Coils QR-C Relays C7-A20 and C9-A41
These relays are designed to switch high DC loads at voltages of 110 and 220 VDC.
They consists of one normally open contact with a gap of >3 mm so that the arc length is divided by two.
Isolation between contacts: >2000 Vrms.
The max. DC load is shown in the tables.
X versions are available in MR-C and QR-C type housing.
Coils MR-C Relays C3-X10, C4-X20, C5-X10
*C3-X10, C4-X20 400V only in pollution category 2
Coils QR-C Relays C7-X10
DC relays adjusted to work at lower power, available in both
MR-C and QR-C versions.
Gold-flashed contacts 0,2µ or plated 10µ Au (optional).
Operational voltage range:
S Relays: 0,8… 2,5 UN
E Relays: 0,8… 1,7 UN
N Relays: 0,8… 1,4 UN
Coils Relays C3-S, C3-E, C3-N, C9-E
The relay in the same unit combines the power of a standard model (A) and the contact reliability of a twin contact.
Specially designed for applications which require information back.
Electronic switching relay where speed and the absence of mechanical parts making it suitable for long life.
Several models for different uses alternating current (AC) or direct current (DC).
p. ex. for switching resistive and inductive AC loads instantaneous,
for switching resistive lamps and AC loads synchronized to zero,
NPN terminal common 2 negative,
PNP terminal common 2 positive.
These are used to switch low currents with high operational reliability.
Isolation between NO/NC: 1000 Vrms.
Contact gap: 0,5 mm.
Gold-flashed contact 0,2μ or plated with 10μ Au (optional).
Maximum load: 6A @ 230V AC1
Minimum load: 1mA @ 5V DC1
Coils MR-C Relays C2-T21 and C3-T31
*400V only in pollution category 2
Coils QR-C Relays C7-T21
A high remanence magnetic circuit allows the relay to latch positively when the current applied flows through the coil in a direction and delatches if the current flows in the opposite direction.
Electronic circuitry is added inside the relay to control this action and also protects against transient voltages.
There is one winding for AC coils and two windings for DC coils.
All coils withstand permanent connection.
The relay can be operated with pulses of 50 ms, minimum, at nominal voltage.
Coils MR-C Relays C3-R20, C4-R30, C5-R20
Coils QR-C Relays C9-R21
Two open contacts, one for silver nickel and one of tungsten work in parallel but are physically displaced so that the tungsten contact makes and breaks the load.
The silver contact is used for carrying the stable current.
This relay was designed to switch incandescent and fluorescent lamps, (with power factor corrected), and DC inductive loads.
Only available in relays C7 type housing.
6A @ 230V AC5a/b (lamps)
10A @ 230V AC15
1,5A @ 110V DC1
Coils QR-C Relays C7-W
Designed to meet the demands of the railway, from the high voltage range, up to vibration and shock according EN 60077-1-2/99 and EN 61373/99 rules.
An open contact arrangement allows an increase in the contact gap,increasing the DC 'break capacity' without altering the AC performance.
Contact gap: 1,5 mm (QR-C types); 1,7 mm (MR-C types).
Isolation of contacts NO: > 2000 Vrms.
16A @ 230V AC11
2A @ 110V DC1
0,4A @ 220V DC1
Coils MR-C Relays C2-G20, C3-G30, C5-G30
*C2-G20 and C3-G20 400V only in pollution category 2
Coils QR-C Relays C7-G20
These versions are similar to X types, however they have an addition of a powerful magnet which blows out the arc generated when the contacts are opened, therefore quenching the arcing quickly and increasing the contact life.
They are able to switch DC loads of up to:
10A @ 220V DC1
2A @ 220V DC13
Coils MR-C Relays C3-M10, C5-M10
*C3-M10, 400V only in pollution category 2
The data referred to in the specifications for each model refers to typical values of "new" relays at 20º C, according to EN 60947.
The tables of electrical life and the tables of maximum DC current show the typical result of exhaustive test performed at an ambient temperature of 20º C, operating frequency of 1,200 operations / hour, and under permanent connection.
The switching current ratings specified in these pages refer to a minimum electrical life of 100,000 operations.
Coils withstand, on permanent connection, a maximum over-voltage of 110% UN, with rated current through the contacts at an ambient temperature of 60º C.
Relays with special specifications can be supplied after consultation with Kühn Controls AG.
You want more informations about RELECO Relays, please send us a fax: +49 (0)7082- 94 00 01, or email to: Inquiry to Kühn Controls… we help you…
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