General purpose miniature power relay

RoHS compliantDHseries
Power relay series pursuing reliability and safety

DH1U-10A(1 pole, standard type)DH1U-16A(High-capacity, 1 pole, 16A type)DH1U-a(1 pole, seal type)

DH1FU(1 pole, tab terminal type)

DH2U(2 poles, standard type)(2 poles, crossbar twin contacts)

DH2TU¥ Currently it is used for such purposesï Control panel, Power supply equipment, Molding equipment, Machine tools,Welding machines, Machinery for agricultureï Commercial equipment, Vending machines, Telecommunications equipment,Disaster prevention equipment, Copiers, Measuring instruments, Medical devices
ï Various household appliancesï DH2TU is ideal for audio system protection

DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series¥ Features
ï It is a general purpose power relay of 1-pole 10A, 16A, 2-poles 5A boasting high reliability and achievement.
ï PCB type and tab terminal type are prepared.
ï Small size, easy to use 1-pole and 2-poles relay.
ï DH2TU is ideal for audio speaker protection etc.
¥ Model numbering system

DH

Rated coil voltageÿ Numeric part indication
DC (V)ÿ 5, 12, 24Dÿ DC
Coil type
Number of contact poles 1ÿ 1 pole2ÿ 2 polesOÿ PCB terminals
Shape indication 00
Fÿ Flange-mounting type (#187 tab terminal)
Contact configuration(M)ÿ Make contacts
T(M)ÿ Crossbar twin contacts (GS alloy)Nilÿ Transfer contacts
Notes
aÿ Seal type16Aÿ High-capacity, 1-pole, 16A type
¥ Safety standards
DH1U

Contact rating (1-pole)
DH1U-aDH1U-16AUL

10A 250V AC
8A 265V AC
1/3hp 265V AC
TV-8/120VAC

16A 250V AC
8A 265V AC
1/3hp 265V AC

16A 250V AC

CSA

10A 250V AC
10A 30V DC
TV-8/120VAC

16A 250V AC

16A 250V AC

VDE

10A (cosÇ=1)
7.5A (cosÇ=0.4)
250V AC

16A (cosÇ=1)
12A (cosÇ=0.4)
250V AC

DH1FU
10A 277V AC

Contact rating (2-poles)
DH2U
DH2TU
5A 265V AC
3A 30V DC
1/12hp 265V AC
TV-3/120VAC

3A 120V AC
3A 30V DC

5A 250V AC
3A 30V DC
1/4hp 240V AC
TV-3/120VAC

3A 120V AC
3A 30V DC

10A (cosÇ=1)
250V ACSEMKO

5A/60A 250V AC
5A (cosÇ=1) 250V AC
3A (cosÇ=0.4) 250V AC
5A (L/R=0ms) 30V DC
5A (L/R=7ms) 30V DC

TUV

CQC

16A 250V AC

16A 250V AC

Electrical Appliances andMaterials Safety ActConformable¥ Coil ratings
Item
AC/DC

DCVoltage

51224

Rated current
ÿÿÿÿCoil resistance
ÿ«ÿ

106
44
2247
275
1100

Operate voltage
ÿVÿ80% max.

Release voltage
Maximum voltageÿVÿÿVÿ
Ratio to rated voltage
10% min.

Power consumption
ÿÿÿ

110%

ï Notesÿ 1. Rated current and coil resistance are values at coil temperature of 20#, tolerance is 10%.
2. Operate voltage and release voltage are values at coil temperature of 20#.
3. Maximum voltage is the maximum value of the allowable voltage fluctuation range of the relay coil operating power supply
with the ambient temperature at 20#.

DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

0.53

General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series¥ RatingsûPerformance
Specifications

Contactspecification

Ratings

Electricalcapability

Mechanicalcapability

LifeConditions foroperation
Mass

Item

Performance (2-poles type)

Item

DH2U

Features

Ratings

Electricalcapability

2 poles, standard typeContact configuration
Contact resistanceContact material
Rated load (resistive load)
Max. switching capacity (resistive load)
Max. switching voltage
Max. switching current
Insulation resistance
Between coil and contacts
Dielectric
Between open contacts
strength

Between opposite polarity contacts

Impulse withstand voltage (between coil and contacts)

Operate time (at rated voltage on, at 20#ÿRelease time (at rated voltage off, at 20#ÿMechanicalcapability

LifeConditions foroperationMass

DH1FUTwo terminals
1 pole, standard typeFeatures
Seal type
Tab terminalon PCB side
Contact configuration
1a/1c1a1a1a/1c
Contact resistance
50m« max. (at DC6V 1A)
Contact material
Ag alloyRated load (resistive load)
AC250V 10A
AC250V 16A
AC250V 16A
AC250V 10A
Max. switching capacity (resistive load)
2500VA
4000VA
4000VA
2500VA
AC250V
Max. switching voltage
Max. switching current
16A
16A
10A
10A, TV-8
Insulation resistance
100M« min. (at DC500V)
Between coil and contact
AC4000V 1 min
Dielectricstrength
Between open contact
AC1000V 1 minImpulse withstand voltage (between coil and contact)
10 000V min. (1.2¶50¿s)
Operate time (at rated voltage on, at 20#ÿ
15ms max. (excluding contact bounce time)
1a: 5ms max. (excluding contact bounce time)
Release time (at rated voltage off, at 20#ÿ
1c: 15ms max. (excluding contact bounce time)
Malfunction
1a: 10 to 55 to 10Hz ÿdouble amplitude 1.5mmÿ
Vibration
resistance Destruction
1c: 10 to 55 to 10Hz ÿdouble amplitude 1.0mmÿ
Malfunction
Shock100m/s 2
resistance Destruction
1000m/s 2
Mechanical endurance (at 180 times/min)1 000 000 times min.
Electrical endurance (resistive load)
100 000 times min. (at rated load)(at 20 times/min)Ambient temperature-15# to +60# (no freezing and condensing at low temperature)
Ambient humidity
5% to 85%RH
approx. 17g
approx. 19g
approx. 17g
approx. 20g

Specifications

Contact
specification

Performance (1-pole type)DH1U-16A
DH1U-aDH1U

Malfunction
Vibration
resistance Destruction
Malfunction
Shockresistance Destruction
Mechanical endurance (at 180 times/min)Electrical endurance (resistive load)(at 20 times/min)Ambient temperatureAmbient humidity

DH2TU

High contact reliability
2a2a/2c(cross bar twin contact)
50m« max. (at DC6V 1A)
30m« max.
Ag alloy
Ag-GS clad
AC250V/DC30V 5A
AC120V/DC30V 3A
1250VA
360VA
AC250V
AC120V
5A
3A
100M« min. (at DC500V)
AC4000V 1 min
AC1000V 1 min
AC1000V 1 min
10 000V min. (1.2¶50¿s)
20ms max. (excluding contact bounce time)
2a: 10ms max. (excluding contact bounce time)
2c: 20ms max. (excluding contact bounce time)
2a: 10 to 55 to 10Hz ÿdouble amplitude 1.5mmÿ
2c: 10 to 55 to 10Hz ÿdouble amplitude 1.0mmÿ
100m/s 2
1000m/s 2
1 000 000 times min.
10 000 times min.
100 000 times min. (at rated load)(at rated load)-15# to +60# (no freezing and condensing at low temperature)
5% to 85%RH
approx. 18g

ï Notes: The above is the initial value.

DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series¥ Dimensions

Unit: mm
DH1U

DH1U-aTOLERANCES
ÿ5mm: 0.2
g5mm: 0.3

DH1U-16A

DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series¥ Dimensions

Unit: mm

DH2TU

DH2U

DH1FU (1a)DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

TOLERANCES
ÿ5mm: 0.2
g5mm: 0.3

DH1FU (1c)General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series¥ Schematics¥ PCB mounting holes (tolerances0.1)
Unit: mm

DH1U (1c)

DH1U (1a)DH1U-a (1a)DH1U-16A
DH2TU

DH2U (2c)¥ Mounting holes (tolerances0.1)
DH1FU (1a)DH1FU (1c)

Unit: mm

DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series
Reference data
¥ Maximum switching capacity¥ Durability curveDH1U-16A

DH1U-16A

100

Number of operations¶10 4 times

100016Contact current (A)10

AC resistive load

10.1

100AC250V resistive load

1011101001000

0246

AC contact voltage (V)8101214161820

AC contact current (A)

DH1FU

DH1FU
1000

Number of operations¶10 4 times

100

Contact current (A)10

AC resistive load

1100AC250V resistive load

1010.111010001000

24681012

AC contact current (A)AC contact voltage (V)
DH2TU

DH2TU
100

Contact current (A)10

Number of operations¶10 4 times

100

AC resistive load

110AC250V resistive load

10.10.1
1101001000

0123

AC contact current (A)AC contact voltage (V)DEC is a professional manufacturer of relays

Daiichi Electric Co., Ltd.
https://www.j-dec.co.jp

4General purpose miniature power relay that can be used for a wide range of applications from control to power.

DH series
Reference data
¥ Maximum switching capacity¥ Durability curve

DH1U

DH1U
1000

Number of operations¶10 4 times

100

Contact current (A)10AC resistive load
1100

AC250V resistive load

1010.111010001000

24

AC contact voltage (V)DH1U-a81012

DH1U-a1000

Number of operations¶10 4 times

100

Contact current (A)6AC contact current (A)10AC resistive load

10.1100AC250V resistive load

1011101001000024

AC contact voltage (V)68101214161820

AC contact current (A)DH2U

DH2U1000

Number of operations¶10 4 times

Contact current (A)100

10AC resistive load
10.1100AC250V resistive load

10111010010000

AC contact voltage (V)123456

AC contact current (A)ï Please understand that specifications may be changed without notice due to product improvement etc. ï Dimensions and specifications indicate only major points. Please contact our sales representatives for details.

DEC is a professional manufacturer of relays

AgencyDaiichi Electric Co., Ltd.
Head office 22, Noge 3chome, Setagayaku, Tokyo 158-0092, Japan
Phone +81-3-3703-5421
Facsimile +81-3-3703-5426
U R L
https://www.j-dec.co.jp E-Mail: sales@j-dec.co.jp

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