Latching Relay
MMK
CSM_MMK_DS_E_2_1
Mechanically Latching Relays Based on the
MM Power Relay
Low power consumption due to mechanical latch for economic
operation.
Relays with mixed coil specifications can be produced (e.g., AC
set coil and DC reset coil).
Operational response fast enough to enable pulse signal power
applications.
Ambient operating temperature: 10C to 55C.
Refer to Safety Precautions for All Relays.
Ordering Information
Type Contact form Open structure Cased
Solder terminals Screw terminals Plug-in (octal pins)
terminals
Standard DPDT MM2K MM2KB MM2KP
3PDT MM3K MM3KB MM3KP
4PDT MM4K MM4KB ---
DPDT+DPST-NO --- --- MM4KP
DC-switching DPDT MM2XK MM2XKB MM2XKP
3PDT MM3XK MM3XKB MM3XKP
4PDT MM4XK MM4XKB ---
DPDT+DPST-NO --- --- MM4XKP
Conforming to auxiliary power DPDT+DPST-NO --- --- MM4KP-JD
relay specifications MM4XKP-JD
Models Conforming to Auxiliary Power Relay Specifications
The MM4KP-JD and MM4XKP-JD satisfy the ratings of auxiliary relays provided in JEC-2500 (1987) standards for power protective relays specified
by the Japan Electromechanical Commission. Furthermore, the MM4KP-JD and MM4XKP-JD satisfy the ratings of multi-contact relays provided
in JEC-174D (1979) standards for power auxiliary relays.
These models work at operation level A specified by JEC-174D (1979) standards and the hot start of the relays is possible after the coils radiate
heat.
In accordance with JEC-2500 (1987) standards, the coil of each model withstands a 130% DC load or 115% AC load.
Note: When ordering, add the rated coil voltage to the model number. Rated coil voltages are given in the coil ratings table.
Example: MM2K, 6 VAC
Rated coil voltage
Available Models
Open Coils (with Solder Terminals)
Type Contact form Relay model Available rated voltage
Standard DPDT MM2K 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
3P3T MM3K 100/(110), 200/(220) VAC
48, 100/110 VDC
DPDT+DPST-NC MM4K 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
DC-switching DPDT MM2XK 24, 100/110 VDC
3P3T MM3XK 200/(220) VAC
100/110 VDC
DPDT+DPST-NC MM4XK 100/(110) VAC
100/110 VDC
1MMK
Open Coils (with Screw Terminals)
Type Contact form Relay model Available rated voltage
Standard DPDT MM2KB 100/(110), 200/(220) VAC
12, 24, 48, 100/110 VDC
3P3T MM3KB 100/(110), 200/(220) VAC
12, 48, 100/110 VDC
DPDT+DPST-NC MM4KB 24, 100/(110), 200/(220) VAC
100/110 VDC
DC-switching DPDT MM2XKB 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
3P3T MM3XKB 200/(220) VAC
24, 100/110 VDC
DPDT+DPST-NC MM4XKB 24, 48, 100/110, 125, 200/220 VDC
Cased Coils (Plug-in Terminals)
Type Contact form Relay model Available rated voltage
Standard DP MM2KP 6, 12, 24, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
3P MM3KP 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
4P MM4KP 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
DC-switching DP MM2XKP 24, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
3P MM3XKP 100/(110), 200/(220) VAC
24, 48, 100/110, 125, 200/220 VDC
4P MM4XKP 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay 4P MM4KP-JD 24, 100/(110), 115, 200/(220) VAC
specifications 24, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay 4P MM4XKP-JD 100/(110), 115, 200/(220) VAC
specifications for DC-switching 24, 48, 100/110, 125, 200/220 VDC
Model Number Legend
MM@@K@
1 2 3
1. Contact Form 3. Terminal Shape
2: DPDT None: Solder
3: 3PDT B: Screw
4: 4PDT (open structure type)/ P: Plug-in
DPDT+DPST-NO (cased type)
Note: The suffix JD indicates models conforming to auxiliary power
2. Type (see note)
relay specifications.
None: Standard
X: DC-switching
2