DX-30 series signal relayDetailed product description：

1 Purpose
This series of signal relays includes DX-31A, DX-31B, DX-32A, and DX-32B used as action indicators in DC operated protection circuits.

Meaning of Model 2


3 Structure and internal wiring
This relay is an embedded electromagnetic signal relay. A relay is composed of iron core, coil, armature, contact system, plug socket, housing, and other parts.
The relay adopts an insertable structure, and the conductive plate inside the housing has a () - shaped spring plate to ensure contact. Relay components can be inserted or removed from the relay housing for ease of use and maintenance.
The internal wiring diagram of DX-30 series signal relay is shown in Figure 1. R is the external voltage reducing resistor attached to the voltage holding circuit, as shown in Table 1.

model	220V	110V	48V
DX-32A	3.9KΩ	1.3KΩ
DX-32B	3KΩ	1.3KΩ	390Ω

DX-31A

DX-31B

DX-32A

DX-32B

Figure 1 Internal wiring diagram of DX-30 series signal relay (back view)

The same movement can have two structural forms, namely A01K for embedded installation and A01H for protruding installation and wiring. SeeAppendix II.

4 Technical data
4.2 The main parameters are shown in Table 1, and the coil resistance is shown in Table 2.

model	winding	rated value		Number of contact points
DX-31A DX-31B	Voltage working winding	V	220，110，48，24，12	Two sets of dynamic contact points
	Current working winding	A	0.01，0.015，0.02，0.025，0.04 0.05，0.075，0.08，0.1，0.15 0.2，0.25，0.5，0.75，1，2，4
DX-32A DX-32B	Voltage working winding	V	220，110，48，24，12	DX-32A There are two sets of dynamic contact points, DX-32B There are three sets of dynamic contact points
	Current working winding	A	0.01，0.015，0.02，0.025，0.04 0.05，0.075，0.08，0.1，0.15 0.2，0.25，0.5，0.75，1，2，4
	Voltage holding winding	V	220，110，48

DX-31B/A		DX-32A		DX-32B
specification	Resistance (Ω)	specification	Resistance (Ω)	specification	Resistance (Ω)
220V	twenty thousand	220V	eighteen thousand	220V	eighteen thousand
110V	nine thousand and six hundred	110V	four thousand and five hundred	110V	four thousand and five hundred
48V	one thousand one hundred and fifty	48V	eight hundred and sixty	48V	eight hundred and sixty
24V	two hundred and eighty-eight	24V	two hundred and fifteen	24V	two hundred and fifteen
12V	seventy-two	12V	fifty-four	12V	fifty-four
0.01A	two thousand and eight hundred	0.01A	two thousand and eight hundred	0.01A	two thousand and eight hundred
0.015A	one thousand two hundred and fifty	0.015A	one thousand two hundred and fifty	0.015A	one thousand two hundred and fifty
0.02A	seven hundred	0.02A	seven hundred	0.02A	seven hundred
0.025A	four hundred and fifty	0.025A	three hundred and forty	0.025A	three hundred and forty
0.04A	one hundred and seventy	0.03A	one hundred and ten	0.03A	one hundred and ten
0.05A	one hundred and ten	0.04A	one hundred and thirty-five	0.04A	one hundred and thirty-five
0.075A	fifty	0.05A	eighty	0.05A	eighty
0.08A	forty-five	0.06A	fifty-six	0.06A	fifty-six
0.1A	twenty-eight	0.075A	thirty-four	0.075A	thirty-four
0.15A	twelve point five	0.08A	thirty-two	0.08A	thirty-two
0.2A	seven	0.1A	twenty-one	0.1A	twenty-one
0.25A	four point five	0.15A	nine point one	0.15A	nine point one
0.5A	one point one	0.2A	five point one	0.2A	five point one
0.7A	zero point five	0.25A	three point four	0.25A	three point four
1A	zero point two eight	0.5A	zero point eight	0.5A	zero point eight
2A	zero point zero seven	0.7A	zero point three seven	0.7A	zero point three seven
4A	zero point zero one seven	1A	zero point two one	1A	zero point two one
		2A	zero point zero two	2A	zero point zero two
		4A	zero point zero one eight	4A	zero point zero one eight

When the temperature of the surrounding medium is 20 ℃± 5 ℃, the operating value of the relay is
The voltage working winding shall not exceed 70% of the rated voltage;
The current working winding shall not exceed 80% of the rated current.
4.3 The holding voltage of the voltage holding winding shall not exceed 80% of the rated holding voltage.
4.4 The movable part of the relay armature should reliably return at not less than 5% of the rated value.
When the voltage does not exceed 250V and the current does not exceed 0.5A, the breaking capacity of the relay contacts in a DC inductive load (time constant of 5 × 10-3s) circuit is 30W.
4.6 At rated value, the power consumption of the relay is
4.6.1 Voltage working winding: DX-3lA shall not exceed 2W, DX-32A, DX-32B shall not exceed 3W.
4.6.2 The current working winding shall not exceed 0.3W.
4.6.3 DX-32A voltage holding circuit 220V not exceeding 10W; 110V not exceeding 5W, 48V not exceeding 3W
DX-32B voltage holding circuit 220V not exceeding 20W; 110V not exceeding 10W, 48V not exceeding 4W
When the temperature of the surrounding medium is+40 ℃, the voltage winding of the relay can withstand 110% of the rated voltage for a long time, and the current winding can withstand three times the rated current for a long time, with a coil temperature rise not exceeding 65K.
4.8 Insulation strength
4.8.1 The conductive part of the relay should be able to withstand an AC voltage of 50Hz and 2kV for 1 minute without breakdown or flashover, as well as insulation between non charged metal parts and the casing, and between various conductive parts that are not connected to the electrical appliance.
4.8.2 The insulation between each winding of the same coil should be able to withstand an AC voltage of 50Hz and 1kV for 1 minute without breakdown or flashover.
The electrical lifespan of the 4.9 relay is 103.

5 Usage Conditions
The product should be able to work reliably under the following working conditions:

5.1 The altitude of the location where the product is used shall not exceed 2000 meters.
5.2 The ambient temperature around the product usage location is: maximum temperature: 40 ℃, minimum temperature: -20 ℃.
5.3 The relative temperature of the surrounding air at the location where the product is used shall not exceed 85%.
5.4 The inclination of the product installation position from its installation vertical plane shall not exceed 5 degrees.
5.5 The location where the product is used is not allowed to have severe vibration and impact.
5.6 The product shall not be used in locations with explosive media, and the surrounding media shall not contain corrosive metals, gases that damage insulation, or conductive media. It is not allowed to be filled with water vapor or have serious mold presence.

6 Ordering Instructions
6.1 Model and name of relay.
6.2 Rated values of relays.
6.3 Number of relays.