MMK
14Pages

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Catalog excerpts

MMK - 1

Latching Relay 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: –10°C to 55°C. Refer to Safety Precautions for All Relays. Ordering Information Type Contact form Open structure Solder terminals Screw terminals Plug-in (octal pins) terminals Conforming to auxiliary power DPDT+DPST-NO relay specifications 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 Standard Contact form Relay model Available rated voltage

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MMK - 2

MMK Open Coils (with Screw Terminals) Type Standard Contact form Relay model Available rated voltage Cased Coils (Plug-in Terminals) Type Standard Contact form Relay model Available rated voltage Conforming to auxiliary power relay specifications Conforming to auxiliary power relay specifications for DC-switching Model Number Legend MM@@K@ 1 1. Contact Form 2: DPDT 3: 3PDT 4: 4PDT (open structure type)/ DPDT+DPST-NO (cased type) 2. Type (see note) None: Standard X: DC-switching 3. Terminal Shape None: Solder B: Screw P: Plug-in Note: The suffix “JD” indicates models conforming to auxiliary...

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MMK - 3

■ Accessories (Order Separately) Sockets Relay Back-connecting Socket Screw terminals Solder terminals Mounting Brackets Contact form Specifications ■ Coil Ratings Set Coil Rated voltage (V) Rated current (mA) DP Open Relays 50 Hz Open Relays Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/–20% for AC rated current and ±15% for DC coil resistance. 2. Performance characteristic data are measured at a coil temperature of 23°C. 3. The AC coil resistance values are reference values. 4. The maximum voltage is one that is...

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MMK - 4

MMK Reset Coil Rated voltage (V) Maximum voltage Initial: Approx. 6.5 Rated: Approx. 4.1 Reset voltage Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15%/–20% for AC rated current and ±15% for DC coil resistance. 2. Performance characteristic data are measured at a coil temperature of 23°C. 3. The AC coil resistance values are reference values. 4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously. Coils (Conforming to Auxiliary Power Relay...

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MMK - 5

■ Contact Ratings Standard Relays Item Open Relays: MM2K(B), MM3K(B), MM4K(B) Resistive load (cosφ = 1) Resistive load (cosφ = 1) Contact mechanism Contact material Rated load Rated carry current Max. switching power (reference value) DC-switching Relays Item Open Relays: MM2XK(B), MM3XK(B), MM4XK(B) Resistive load (cosφ = 1) Contact mechanism Resistive load (cosφ = 1) Contact material Rated load Rated current flow Max. switching power (reference value) Note: 1. When switching DC inductive loads at 125 V or more, an unstable region exists for a switching current of between 0.5 and 2.5 A....

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MMK - 6

Open or bifurcated-contact Relays Contact resistance (see note 2) AC: 30 ms max.; DC: 60 ms max. (minimum pulse width for AC and DC: 100 ms) Reset time (see note 3) 30 ms max. (minimum pulse width for AC and DC: 100 ms) Mechanical: Electrical: Insulation resistance (see note 4) Dielectric strength 1,500 VAC, 50/60 Hz for 1 min between contacts of same polarity 2,000 VAC, 50/60 Hz for 1 min between contacts of different polarity, between contacts and coil, and between set and reset coils Vibration resistance Destruction: Malfunction: 10 to 55 to 10 Hz, 0.375 mm single amplitude (0.75 mm...

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MMK - 7

Engineering Data ■ Standard Relays Maximum Switching Power Open Relays Cased Relays AC inductive load (cosφ = 0.4) DC resistive load AC inductive load (cosφ = 0.4) Endurance Curves Open Relays Cased Relays 220 VAC resistive load Inductive load (cosφ = 0.4) 24 VDC resistive load Inductive load L/R = 7 ms MM@KP Endurance (x10 3 operations) 220 VAC resistive load Inductive load (cosφ = 0.4) 24 VDC resistive load Inductive load L/R = 7 ms ■ DC-switching Relays Maximum Switching Power Open Relays Cased Relays

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MMK - 8

MMK Endurance Curves Open Relays Cased Relays MM@XKP 10,000 5,000 3,000 110 VDC resistive load 1,000 500 110 VDC inductive load (L/R 7 ms) 110 VDC resistive load Inductive load L/R=7 ms ■ Relays Conforming to Auxiliary Power Relay Specifications Maximum Switching Power MMX4KP-JD AC inductive load cosφ = 0.4 AC resistive load Switching current (A) 220 VAC resistive load Inductive load cosφ = 0.4 110 VDC resistive load Inductive load L/R = 7 ms 24 VDC resistive load Inductive load L/R = 7 ms

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MMK - 9

Set voltage Reset voltage Coil temperature rise (° C) Ambient Temperature vs. Coil Temperature Rise Must-operate and reset voltage (%) Ambient Temperature vs. Set and Reset Voltage Contact carry current Set coil Reset coil Number of samples: 3 Ambient temperature (°C) Set voltage Reset voltage Coil temperature rise ( ° C) Must-operate and reset voltage (%) Measurement conditions: Impose a shock of 50 m/s2 in the ±X, ±Y, and ±Z directions three times each with the Relay energized and not energized to check the shock values that cause the Relay to malfunction. Shock direction Contact carry...

Open the catalog to page 9

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