• According to
- SIL-Claimed Level (SIL CL) 2 to EN 62061
- Performance Level (PL) d to DIN EN ISO 13849-1
• Adjustable time delay
• Long time stability by digital timing circuit
• With auxiliary voltage
• 1 timing circuit
• BH 7925 in dual voltage version
• BH 7925 optionally for AC 230 V
• Output: 1 NC contact, 1 NO contact, positive guided or
1 NC contact, 3 NO contacts, positive guided
• Indication of state of operation
• Removable terminal strips
• Wire connection: also 2 x 1.5 mm2 stranded ferruled (isolated),
DIN 46 228-1/-2/-3/-4 or
2 x 2.5 mm2 stranded ferruled DIN 46 228-1/-2/-3
• Optionally with 2 timing circuits
• Optionally fixed time delay
• Optionally without auxiliary voltage on BH 7925
• Optionally for switching small loads
• BG 7925: width 22.5 mm
BH 7925: width 45 mm
- SIL-Claimed Level (SIL CL) 2 to EN 62061
- Performance Level (PL) d to DIN EN ISO 13849-1
• Adjustable time delay
• Long time stability by digital timing circuit
• With auxiliary voltage
• 1 timing circuit
• BH 7925 in dual voltage version
• BH 7925 optionally for AC 230 V
• Output: 1 NC contact, 1 NO contact, positive guided or
1 NC contact, 3 NO contacts, positive guided
• Indication of state of operation
• Removable terminal strips
• Wire connection: also 2 x 1.5 mm2 stranded ferruled (isolated),
DIN 46 228-1/-2/-3/-4 or
2 x 2.5 mm2 stranded ferruled DIN 46 228-1/-2/-3
• Optionally with 2 timing circuits
• Optionally fixed time delay
• Optionally without auxiliary voltage on BH 7925
• Optionally for switching small loads
• BG 7925: width 22.5 mm
BH 7925: width 45 mm
Technical Data
Time circuit
Time ranges: adjustable fixed
0.1 ... 1 s 1 s
0.3 ... 3 s 3 s
0.5 ... 5 s 5 s
1 ... 10 s 10 s
3 ... 30 s 30 s
10 ... 100 s
30 ... 300 s
3 ... 30 min
Longer time on request. Units without auxiliary supply are available only
up to 10 s with 1 timing circuit or 5 s with 2 timing circuits.
Repeat accuracy: ±1 % of the setting value
Min. turn-on time: 10 % of full scale value
50 % of full scale value for units without
auxiliary supply
Input
Nominal voltage UN
(Auxiliary voltage UH)
BG 7925: AC/DC 24 V
BH 7925: AC/DC 24 V1) and AC 230 V2)
1) on terminals A3 - A4
2) on terminals A1 - A2
Voltage range: AC 0.8 ... 1.1 UN
with 10 % residual ripple: DC 0.9 ... 1.1 UN
with 48 % residual ripple: DC 0.8 ... 1.1 UN
Nominal frequency: 50 / 60 Hz
Nominal consumption: typically DC 2.0 W
typically AC 4.2 VA
Technical Data
Control voltage US
at Y1, Y2, Y3: typically DC 24 V
current in Y1, Y3: typically 6.5 mA
Output
Contacts
BG 7925.21, BH 7925.21: 1 NO contact, 1 NC contact
BG 7925.96, BH 7925.96: 3 NO contacts, 1 NC contact
Contact type: Relay, positively-driven
Nominal output voltage: AC 10 ... 250 V
DC 10 ... 110 V
Thermal current Ith: max. 5 A
Switching capacity
to AC 15: IEC/EN 60 947-5-1
3 A / AC 230 V for the NO contact
BG/BH 7925.21: 1 A / AC 230 V for the NC contact
BG/BH 7925.96: 2 A / AC 230 V for the NC contact
to DC 13: IEC/EN 60 947-5-1
BG 7925.21/40_: 2 A / DC 24 V for the NO contact
2 A / DC 24 V for the NC contact
Electrical life IEC/EN 60 947-5-1
to AC 15 at 3 A, AC 230 V: ≥ 2.5 x 105 switching cycles
Permissible operating
frequency: max. 2000 switching cycles / h
please note minimum closing time
Short circuit strength
max. fuse rating: 6 A gL IEC/EN 60 947-5-1
Mechanical life: 10 x 106 switching cycles
Technical Data
General Data
Operating mode: Continuous operation
Temperature range: - 15 ... + 55°C
Clearance and creepage
distances
rated impuls voltage /
pollution degree: 4 kV / 2 IEC 60 664-1
EMC
Electrostatic discharge: 8 kV (air) IEC/EN 61 000-4-2
Fast transients: 2 kV IEC/EN 61 000-4-4
Surge voltages
between
wires for voltage supply: 1 kV IEC/EN 61 000-4-5
between wire and ground: 2 kV IEC/EN 61 000-4-5
HF irradiation: 10 V IEC/EN 61 000-4-6
Interference suppression: limit value class B EN 55011
Degree of protection
Housing: IP 40 IEC/EN 60 529
Terminal plate: IP 20 IEC/EN 60 529
Housing: Thermoplastic with V0 behaviour
according to UL subject 94
Vibration resistance: Amplitude 0.35 mm, IEC/EN 60 068-2-6
frequency 10 ... 55 Hz
Climate resistance: 15 / 055 / 04 IEC/EN 60 068-1
Wire connection: 1 x 4 mm2 solid or
1 x 2.5 mm2 stranded ferruled (isolated) or
2 x 1.5 mm2 stranded ferruled (isolated)
DIN 46 228-1/-2/-3/-4 or
2 x 2.5 mm2 stranded ferruled
DIN 46 228-1/-2/-3
Wire fixing: Terminal screws M 3.5
Box terminal with wire protection
Mounting: DIN rail IEC/EN 60 715
Weight: 210 g
Dimensions
Width x height x depth
BG 7925: 22,5 x 84 x 121 mm
BH 7925: 45 x 84 x 121 mm
Safety related data
Probability of dangerous
Failure per Hour (PFHD): 1.91 . 10-7 1/h
Safe Failure Fraction (SFF): 80.6 % (AC/DC 24 V)
80.5 % (DC 24 V)
Proof Test Intervall (T1): 20 Years
Time circuit
Time ranges: adjustable fixed
0.1 ... 1 s 1 s
0.3 ... 3 s 3 s
0.5 ... 5 s 5 s
1 ... 10 s 10 s
3 ... 30 s 30 s
10 ... 100 s
30 ... 300 s
3 ... 30 min
Longer time on request. Units without auxiliary supply are available only
up to 10 s with 1 timing circuit or 5 s with 2 timing circuits.
Repeat accuracy: ±1 % of the setting value
Min. turn-on time: 10 % of full scale value
50 % of full scale value for units without
auxiliary supply
Input
Nominal voltage UN
(Auxiliary voltage UH)
BG 7925: AC/DC 24 V
BH 7925: AC/DC 24 V1) and AC 230 V2)
1) on terminals A3 - A4
2) on terminals A1 - A2
Voltage range: AC 0.8 ... 1.1 UN
with 10 % residual ripple: DC 0.9 ... 1.1 UN
with 48 % residual ripple: DC 0.8 ... 1.1 UN
Nominal frequency: 50 / 60 Hz
Nominal consumption: typically DC 2.0 W
typically AC 4.2 VA
Technical Data
Control voltage US
at Y1, Y2, Y3: typically DC 24 V
current in Y1, Y3: typically 6.5 mA
Output
Contacts
BG 7925.21, BH 7925.21: 1 NO contact, 1 NC contact
BG 7925.96, BH 7925.96: 3 NO contacts, 1 NC contact
Contact type: Relay, positively-driven
Nominal output voltage: AC 10 ... 250 V
DC 10 ... 110 V
Thermal current Ith: max. 5 A
Switching capacity
to AC 15: IEC/EN 60 947-5-1
3 A / AC 230 V for the NO contact
BG/BH 7925.21: 1 A / AC 230 V for the NC contact
BG/BH 7925.96: 2 A / AC 230 V for the NC contact
to DC 13: IEC/EN 60 947-5-1
BG 7925.21/40_: 2 A / DC 24 V for the NO contact
2 A / DC 24 V for the NC contact
Electrical life IEC/EN 60 947-5-1
to AC 15 at 3 A, AC 230 V: ≥ 2.5 x 105 switching cycles
Permissible operating
frequency: max. 2000 switching cycles / h
please note minimum closing time
Short circuit strength
max. fuse rating: 6 A gL IEC/EN 60 947-5-1
Mechanical life: 10 x 106 switching cycles
Technical Data
General Data
Operating mode: Continuous operation
Temperature range: - 15 ... + 55°C
Clearance and creepage
distances
rated impuls voltage /
pollution degree: 4 kV / 2 IEC 60 664-1
EMC
Electrostatic discharge: 8 kV (air) IEC/EN 61 000-4-2
Fast transients: 2 kV IEC/EN 61 000-4-4
Surge voltages
between
wires for voltage supply: 1 kV IEC/EN 61 000-4-5
between wire and ground: 2 kV IEC/EN 61 000-4-5
HF irradiation: 10 V IEC/EN 61 000-4-6
Interference suppression: limit value class B EN 55011
Degree of protection
Housing: IP 40 IEC/EN 60 529
Terminal plate: IP 20 IEC/EN 60 529
Housing: Thermoplastic with V0 behaviour
according to UL subject 94
Vibration resistance: Amplitude 0.35 mm, IEC/EN 60 068-2-6
frequency 10 ... 55 Hz
Climate resistance: 15 / 055 / 04 IEC/EN 60 068-1
Wire connection: 1 x 4 mm2 solid or
1 x 2.5 mm2 stranded ferruled (isolated) or
2 x 1.5 mm2 stranded ferruled (isolated)
DIN 46 228-1/-2/-3/-4 or
2 x 2.5 mm2 stranded ferruled
DIN 46 228-1/-2/-3
Wire fixing: Terminal screws M 3.5
Box terminal with wire protection
Mounting: DIN rail IEC/EN 60 715
Weight: 210 g
Dimensions
Width x height x depth
BG 7925: 22,5 x 84 x 121 mm
BH 7925: 45 x 84 x 121 mm
Safety related data
Probability of dangerous
Failure per Hour (PFHD): 1.91 . 10-7 1/h
Safe Failure Fraction (SFF): 80.6 % (AC/DC 24 V)
80.5 % (DC 24 V)
Proof Test Intervall (T1): 20 Years
