3UA50001A [ETC]
OVERLOAD 1 TO 1.6 ; 过载1至1.63UA Thermally Delayed Overload Relays
CLASS 10
Technical data according to IEC 947-4
Type
3UA70 11/
3UA70 21
3UA50/
3UA52
3UA55
3UA58
3UA59
3UA60
3UA61/
3UA62
3UA66
3UA68
Trip class
CLASS 10A (2 s <tA ≤10 s at 7.2×Ie from cold state and tA ≤2 min at 1.5×Ie from hot state)
Phase failure sensitivity by
differential phase shift
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
Changeover to automatic
reset
no
RESET button with trip-free
feature
yes
Temperature compensation
Switch position indicator
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
Test button actuates the NO
and NC contacts
Terminal for contactor coil
no1)
yes
yes
no1)
no1)
no1)
no1)
no1)
no1)
Permissible ambient
temperature
°C –25 to +552)
–25 to +55
Degree of protection
Shock resistance
IP 00/open or IP 20 to IEC 947-1 and DIN 40 050
g/ms 8/10
Main circuit
Rated insulation
voltage Ui
AC/DC V 690
690
6
690
6
1000
8
690
6
1000
8
1000
8
1000
8
1000
8
(pollution degree 3)
Rated impulse
withstand voltage Uimp
kV
6
Type of current,
frequency range
DC; AC up to 400 Hz
AC 50 to 400 Hz
Conductor cross-sections
Setting
range
(≤200 A/
>200 A)
Terminal screw
solid or stranded
finely stranded with end
sleeve
M 3
M 4
M 5
M 5
M 5
M 6
M 8
M 8/M 10
185/240
–
M 10
mm2 0.5 to 2.5
mm2 0.5 to 1.5
2.5 to 6
1.5 to 4
1.5 to 25
1 to 16
2.5 to 35
1.5 to 25
1.5 to 25
1 to 16
25 to 70
25 to 50
50 to 120
25 to 95
2×240
–
Flat bars
mm
–
–
–
–
–
–
20×3
20×3/
2×30×5
2×30×5
10 to 14
89 to 124/
14 to 24
124 to 210
Tightening torque
Nm 0.4 to 0.7
lb. in 4 to 6.5
Nm
1 to 1.5
9 to 13
2.5 to 3
22 to 26.5
2.5 to 3
22 to 26.5
2.5 to 3
22 to 26.5
6 to 8
52 to 50
10 to 14
89 to 124
14 to 24
124 to 210
lb. in
Power loss per
conducting path (max.)
at lowest value
W (VA) 0.6
W (VA) 2.3
0.9
1.2
3
2.6
4
0.8
2
5
7
5
7
4 ( 5)
6 ( 9)
at highest value
of the setting range
2.25
10 (12)
15 (22)
1) Not required.
2) The upper setting Io is to be reduced by 0.5% per
1°C excess temperature or a min. space of
5 mm is to be maintained between the units when
several overload relays are series mounted and
simultaneously operated at ambient temperatures
exceeding 25°C.
3UA Thermally Delayed Overload Relays
CLASS 10
Technical data according to IEC 947-4
Type
3UA70 11/
3UA70 21
3UA50/
3UA52
3UA55
3UA58
3UA59
3UA60
3UA61/
3UA62
3UA66
3UA68
Auxiliary circuit
Auxiliary contacts
1 NO + 1 NC
1 NO + 1 NC
M 3.5
1 NO + 1 NC
Conductor cross-sections
Terminal screw
M 3
solid or stranded
finely stranded with end
sleeve
mm2 2×(0.5 to 2.5)
mm2 2×(0.5 to 1.5)
2×(0.5 to 1)/2×(1 to 2.5)
2×(0.5 to 1)/2×(0.75 to 2.5)
Tightening torque
Nm 0.4 to 0.7
lb. in 4 to 6.5
0.8 to 1.4
7 to 12
Rated insulation voltage Ui
(pollution degree 3)
NC
Unequal potential
Equal potential
(NO + NC
(NO + NC)
connected as
changeover contact)
690
690
400
V
Rated impulse
withstand voltage Uimp
kV
6
Switching capacity
Rated operational
voltage Ue
Rated operational
current Ie
at AC-15:
at DC-13:
V
A
24
2
60
1.5
125
230
400
500
1
690
0.8
24
2
60
0.5
110
0.3
220
0.2
1.25 1.15 1.1
Conventional thermal
current Ith
A
6
Short-circuit protection
Fuses LV HRC Type 3NA, DIAZED Type 5SA/5SB, NEOZED Type 5SE: utilization category gL/gG 6 A
Miniature circuit-breaker (C characteristic): 3 A
a -, u -, r -Ratings, main circuit
Rated current
Rated voltage
A
12
14.5 (25)1)
600
45
600
88
600
63
600
135
600
150/180
600
400
600
630
600
AC V 600
a -, u -, r -Ratings, auxiliary circuit
Rated voltage
Switching capacity
AC V 600, >150 same polarity
B 600, R 300
Adapter for installing the relay as a single unit
Type
3UX1 418
3UA50
3UX1 420
3UA52
3UX1 421
3UA58
3UX1 424
3UA60
3UX1 425
3UA55
For overload relay
Conductor cross-sections
Terminal screw
solid or stranded
finely stranded with end
sleeve
M 3.5
M 4
M 6
M 6
M 5
mm2 1 to 4
2.5 to 10
2.5 to 35
2×25 to 70
1 to 25
mm2 0.75 to 2.5
1.5 to 6
1.5 to 25
2×25 to 50
1 to 16
Trip classes of thermal, delayed
magnetic or solid-state overload relays –
Excerpt from IEC 947-4
Trip class
A
Tripping time tA in seconds
at 7.2×Ie from cold state
10
10
20
30
2 < tA ≤ 10
4 < tA ≤ 10
6 < tA ≤ 20
9 < tA ≤ 30
1) Value in brackets only valid for 3UA52.
3UA Thermally Delayed Overload Relays
CLASS 10
Technical data according to IEC 947-4 and DIN VDE 0660 Part 102
Short circuit protection with fuses for motor feeders with short-circuit currents up to 50 kA at 690 V1), 50/60 Hz
Overload
relay
Type
Permissible short-circuit fuses for motor starters
Short-circuit protection with circuit
breakers, fuseless motor feeders,
combination of devices for mounting
onto busbars, see "Circuit breakers"
and "Fuseless load feeders".
consisting of overload relay and contactor, contactor assembly
Fuse links
LV HRC
Type 3NA
Type 5SB
Type 5SE
LV HRC
British
u -listed
fuses
CLASS
R K5
DIAZED
Type 3ND
Utilization
category aM
standards
fuses
NEOZED
Utilization category
gL/gG
BS 88 Type T
Setting
range
A
Type of coordination2)
Type of coordination2) Type of coordination2)
“1”
A
“2”
A
“2”
A
“1”
A
“2”
A
A
3UA70 21
0.1 – 0.16
0.16– 0.25
0.25– 0.4
25
25
25
0.5 slow3)
–
–
–
–
–
25
–
1
1
2
13)
25
25
1.63)
0.4 – 0.63
0.63– 1
0.8 – 1.25
25
25
25
2
4
4
25
25
25
2
4
4
3
5
6
1
– 1.6
25
25
25
6
6
6
25
25
25
6
6
8
10
12
1.25– 2
1.6 – 2.5
10
2
– 3.2
25
25
25
10
10
10
25
25
25
10
10
10
12
12
12
2.5 – 4
3.2 – 5
4
5
– 6.3
25
25
25
10
10
10
25
25
25
10
10
10
15
20
20
– 8
6.3 –10
3UA50
0.1 – 0.16
0.16– 0.25
0.25– 0.4
35
35
35
0.5 slow3)
–
–
–
–
–
–
25
25
25
–
1
1
2
13)
1.63)
0.4 – 0.63
0.63– 1
0.8 – 1.25
35
35
35
2
4
4
25
25
25
2
4
4
3
5
6
1
– 1.6
35
35
35
6
6
6
25
25
25
6
6
8
10
12
1.25– 2
1.6 – 2.5
10
2
– 3.2
35
35
35
10
10
16
25
25
25
10
10
16
12
12
12
2.5 – 4
3.2 – 5
4
5
– 6.3
– 8
35
35
35
16
20
25
25
25
25
16
16
20
15
20
20
6.3 –10
8
–12.5
35
35
25
25
25
35
20
32
20
20
10 –14.5
3UA52
0.1 – 0.16
0.16– 0.25
0.25– 0.4
63
63
63
0.5 slow3)
–
–
–
–
–
63
63
63
–
1
1
2
13)
1.63)
0.4 – 0.63
0.63– 1
0.8 – 1.25
63
63
63
2
4
4
63
63
63
2
4
4
3
5
6
1
– 1.6
63
63
63
6
6
6
63
63
63
6
6
8
10
12
1.25– 2
1.6 – 2.5
10
2
– 3.2
63
63
63
10
10
16
63
63
63
10
10
16
12
12
12
2.5 – 4
3.2 – 5
4
5
– 6.3
– 8
63
63
63
16
20
25
63
63
63
16
20
20
15
20
20
6.3 –10
8
–12.5
63
63
63
63
25
25
25
25
16
20
20
20
63
63
63
63
20
25
35
35
30
30
30
45
10 –16
12.5 –20
16 –25
3UA55
1
– 1.6
80
80
80
6
6
6
–
–
–
100
100
100
6
6
8
10
12
1) Voltage tolerance +5%.
1.25– 2
1.6 – 2.5
10
2) Coordination of short-circuit equipment
according to IEC 947-4/DIN VDE 0660
Part 102:
2
– 3.2
80
80
80
10
10
16
100
100
100
10
10
16
12
12
15
2.5 – 4
3.2 – 5
Type of coordination “1”:
The contactor or starter must not endanger
persons or the installation in the event of a
short-circuit. They do not need to be suitable
for further operation without repair and the
renewal of parts.
4
5
– 6.3
– 8
80
80
80
16
20
25
100
100
100
16
20
25
15
20
25
6.3 –10
8
–12.5
80
80
80
25
35
50
16
20
20
100
100
100
20
40
50
25
40
50
10 –16
12.5 –20
Type of coordination “2”:
The contactor or starter must not endanger
persons or the installation and must be
suitable for further use.There is a danger
of contact welding.
16 –25
20 –32
25 –36
80
80
80
50
80
80
40
50
50
100
100
100
63
80
80
60
60
60
32 –40
36 –45
80
80
80
80
50
50
100
100
80
80
60
60
3) D-fuse links UN = 500 V, make SIBA.
3UA Thermally Delayed Overload Relays
CLASS 10
Technical data according to IEC 947-4 and DIN VDE 0660 Part 102
Short-circuit protection with fuses for motor feeders with short-circuit currents up to 50 kA at 690 V1), 50/60 Hz
Overload
relay
Type
Permissible short-circuit fuses for motor starters
Short-circuit protection with circuit
breakers, fuseless motor feeders,
combination of devices for mounting
onto busbars, see "Circuit breakers"
and "Fuseless load feeders".
consisting of overload relay and contactor, contactor assembly
Fuse links
LV HRC
Type 3NA
Type 5SB
Type 5SE
LV HRC
British
u -listed
fuses
CLASS
R K5
DIAZED
Type 3ND
Utilization category
aM
standards
fuses
NEOZED
Utilization category
gL/gG
BS 88 Type T
Setting
range
A
Type of coordination3)
Type of coordination3) Type of coordination3)
“1”
A
“2”
A
“2”
A
“1”
A
“2”
A
A
3UA58
16 – 25
20 – 32
25 – 40
32 – 50
160
160
160
160
50
25
160
63
60
70
70
70
63
80
35
40
50
160
160
160
63
80
80
125
40 – 57
50 – 63
57 – 70
63 – 80
70 – 88
160
160
160
250
250
125
125
125
160
160
63
63
160
160
160
160
160
100
100
100
125
125
70
100
125
150
175
63
80
100
3UA70 11, 3UA59
0.1 – 0.16
0.16– 0.25
0.25– 0.4
25
25
25
0.5 slow4)
–
–
–
–
–
25
25
25
–
1
1
2
14)
1.64)
0.4 – 0.63
25
25
25
2
4
4
25
25
25
2
4
4
3
5
6
0.63–
1
0.8 – 1.25
1
–
1.6
2
25
25
25
6
6
6
25
25
25
6
6
10
8
10
12
1.25–
1.6 – 2.5
2
–
3.2
4
5
25
25
25
10
10
10
25
25
25
10
10
16
12
12
12
2.5 –
3.2 –
4
5
–
–
6.3
8
25
25
25
10
10
10
25
35
35
16
16
20
15
20
20
6.3 – 10
8
– 12.52) 35
16
25
25
–
16
20
63
63
63
32
32
35
20
30
45
10 – 16
12.5 – 20
63
63
16 – 25
20 – 32
25 – 40
63
80
125
25
63
80
25
35
40
80
80
160
50
63
80
45
60
70
32 – 45
40 – 57
50 – 63
160
160
160
100
125
125
50
63
63
160
160
160
80
100
100
70
100
100
3UA60, 3UA61, 3UA62
55 – 80
63 – 90
80 –110
90 –120
110 –135
120 –150
135 –160
150 –180
250
250
400
400
400
400
400
400
160
160
200
224
224
250
250
250
80
100
125
125
160
160
160
200
160
160
315
315
315
315
355
355
125
125
160
200
200
200
250
250
150
150
175
175
175
200
200
200
3UA66, 3UA68
1) Voltage tolerance +5%.
80 –125
125 –200
160 –250
200 –320
250 –400
320 –500
355
355
500
500
800
800
224
224
400
400
500
500
125
200
250
315
400
630
630
355
355
500
500
800
800
1000
224
224
355
400
450
500
500
300
300
300
300
400
400
2) For 3UA70 11 setting range 8 to 12 A.
3) Coordination of short-circuit equipment
according to IEC 947-4/DIN VDE 0660
Part 102:
Type of coordination “1”:
The contactor or starter must not endanger
persons or the installation in the event of a
short-circuit. They do not need to be suitable
for further operation without repair and the
renewal of parts.
400 –630
1000
500
1200
CLASS L
(630)5)
Type of coordination “2”:
The contactor or starter must not endanger
persons or the installation and must be
suitable for further use.There is a danger
of contact welding.
4) D-fuse links UN = 500 V, make SIBA.
5) Valid for 3TB contactor.
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