This standard specifies the following contents of external dimensions, terminal and mounting configuration dimensions of universal relays with or without connectors: definition; basic module and recommended multiples; external dimensions, using integer multiples of basic module; for socket-mounted relays, the height of the socket is also included; all dimensions given in this standard are in millimeters. This standard applies to universal relays with or without connectors of all structural types (such as electromechanical, electronic, reed, etc., including socket-mounted, printed circuit board type and other types described in Chapter 6 of this standard). GB/T 14598.6-1993 Electrical relays Part 18: Dimensions of universal relays with or without connectors GB/T14598.6-1993 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Electrical relays
Part 18: Dimensions for general purpose all-or-nothing relaysCB/T14598.6—93
IEC 255-—18(1982)
This standard is equivalent to the International Electrotechnical Commission Standard 1EC255-—18 "Electrical relays Part 18: Dimensions for general purpose all-or-nothing relays" (1982 edition).
1 Subject content and scope of application
1.1 Subject content
This standard specifies the following contents of external dimensions, lead terminals and mounting configuration dimensions of universal relays with or without connectors: Definition (Chapter 2):
Basic modulus and recommended multiples (Chapter 3):
External dimensions, in integer multiples of basic modulus; for socket-mounted relays, the height of the socket is also included: All dimensions given in this standard are in millimeters (mm). 1.2 Scope of application
This standard applies to universal relays with or without connectors of all structural types (such as electromechanical, electronic, tongue-mounted, etc., including socket-mounted, printed circuit board-mounted and other types described in Chapter 6 of this standard). This standard does not apply to relays included in ISO (TC20: Aeronautics and Spacecraft) standards, nor does it apply to the internal structure of relays and the dimensions of lead terminals and mounting components.
See the following system diagram:
Approved by the State Bureau of Technical Supervision on September 5, 1993 and implemented on April 1, 1994
1.3 Reference standards
Standardized electrical appliances
Antingwei output
No. 4
IEC97 Printed circuit board
GB/T 14598. 6--93
With or without power type
General purpose relay
1EC New standard
Relay
Printed circuit board type
End electrical appliances
No. 5
IEC321 Guide for the design and use of printed circuit board mounted components ISO1791 Modular configuration - Compilation
2 DefinitionsbzxZ.net
The following definitions apply to this standard.
Other electrical appliances
No. 6
2.1 General-purpose relays General-purpose relays refer to all types of electrical relays with mounting parts and terminals (regardless of their purpose). 2.2 Dimensions
The external dimensions of the relay together with the mounting parts and terminals are given by the symbols marked in Figure 1 (general diagram) and Figure 4 (specific legend). In Figures 1 to 4:
CB/T14598.693
Figure 1 Schematic diagram of external dimensions of relays, mounting parts and terminals, 6,: are the minimum dimensions of the width, thickness and height of the relay body (excluding terminals, sockets and mounting parts). a1, b, ci: (when applicable) are the nominal distances between the center points of the mounting positions. 6, and c1 are not marked in Figure 1. In Figure 4, az, b2 are the maximum overall dimensions of the relay including terminals, sockets and mounting parts. a., b, and cz do not include any additional space that may be required for energy use, including environmental conditions such as stray magnetic fields. α: × b The surface parallel to the mounting plane is defined as the mounting surface. c: The total height of the relay and its socket above the mounting surface (see Figure 4) when the relay and its socket are properly mated. 2.3 Basic module
The module is a unit of magnitude used as an increment for the module configuration (ISU 1791). The basic module M is the step size in the grid system shown in Figures 2 and 3. 3 Quantity of terminals and mounting locations
3.1 The centers of the terminals and mounting locations shall be arranged at the intersections of the standard grid (or moved to half the basic module), and the standard grid shall coincide with the corresponding surfaces of the relay in the same plane (see Figure 2) or in different planes (see Figure 3). 3.2 Examples:
GB/T 14598.6—93
Figure 2 Example of the arrangement of the center of the lead terminal on one plane of the standard grid Figure 3 Example of the arrangement of the center of the lead terminal and the mounting position on two planes of the standard grid 4 Socket-mounted relays
4.1 Only relays with the structure of "socket-mounted relays" are discussed. Relays used directly or with an intermediate plug-in bank on printed circuit boards are discussed in Chapter 5.
Note: Only sockets designed according to the modular system will be widely used in the future. GB/T 14598.6—93
Chain electrical appliances
Figure 4 Example of socket-mounted relays
2 The basic module of all sizes is 2.50 mm.
4.3 See Table 1 for multiples.
Release value
Installation surface
Corresponding value
GB/T 14598. 6--93
Continued Table 1
Note; Symbol explanation: "+" is recommended and preferred, "\" is recommended, and "—" is not recommended. 5 Relays for printed circuit boards
5.1 This clause only deals with relays that are directly or connected to an intermediate catcher and installed on a printed circuit board. 5.2 Basic module
5.2.1 The basic module of the installation surface is 2.50 mm. 5. 2. 2 The positioning module of the lead terminal and the mounting part is 2. 54 mm according to IEC 97 standard. See Figure 5. n × 2. 54
Figure 5 Example of relays for printed circuit boards The multiple should be selected from Table 2) Fa
5. 2. 3 The basic module of height c is 2. 50 mm. For relays with c less than 25 mm, the provisions of Article 4.3 of IEC 321 shall apply.
5.2.4 When dimension az or b is less than 5 mm, or both dimension a and b are less than 5 mm, the module of the corresponding dimension shall be 1.25 mm. 5.3 For multiples, see Table 2.
Multiple n
财=2. 54
GB/T14598.6—93
Corresponding value
Note: <)c column multiples 1 to 10. See Article 4.3 of IEC 321. ②Symbol explanation: \+\ recommended and preferred, \C)\ recommended, ““ not recommended. The lead terminal size shall comply with Article 5.6 of IEC321. 5.4
6Other relays
The basic module of all sizes is 2.50 mm. 6. 2 See Table 3 for multiples.
Corresponding value
Corresponding value
GB/T14598.6—93
Continued Table 3
Note, symbol explanation, "+\ recommended and preferred," \ recommended, "II\ not recommended, size
6.3 The mounting position should be at the intersection of the standard grid consistent with the relay mounting surface (42×bg). See Figure 6. c
GB/T14598.6-93
Figure 6 Example of suitable configuration of mounting position on the standard grid The mounting method (through hole and threaded hole) should comply with ISO standards (when applicable). 6.4 Standard lead terminals (in the test):
The lead terminals should comply with the relevant IEC standards (when applicable). In the future, the following terminals will be considered (may not be complete): Threaded terminals:
Welded terminals:
Wire-wrap terminals:
Plug-in terminals +
Clamp-on terminals.
Additional notes:
This standard is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Relay Standardization Technical Committee. This standard was drafted by the State-owned Qunwan Radio Equipment Factory and the Electronic Standardization Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wu Shuzhi, Shi Xinyuan, Zhang Weizhong, Hui Wande, and Qian Hua.
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